What is 1.201428514285142851428514285... as a Fraction?

1.2014285 equals 24028331999980 as a fraction.

How do you turn 1.2014285 repeating into a fraction?

Detailed Answer:

Step 1: To convert 1.2014285 repeating into a fraction, begin writing this simple equation:

n = 1.2014285 (equation 1)

Step 2: Notice that there are 5 digits in the repeating block (14285) and 2 digits in the non-repeating part (20). Multiply both sides by 10⁷ = 10000000.

10000000 × n = 12014285.14285 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

10000000 × n = 12014285.14285
     100 × n = 1.2014285
 9999900 × n = 12014165

120141659999900 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 5 (the GCF - greatest common factor).

n = 120141659999900 = 12014165 ÷ 59999900 ÷ 5 = 24028331999980. So,

1.2014285 = 24028331999980 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 24028331999980 is also equal to 14028531999980 when expressed as a mixed number.

The repeating decimal 1.2014285 (vinculum notation) has a repeated block length of 5. It is also represented as 1.20142851428514285... (ellipsis notation) which equals approximately 1.201428514285142851428514285 (decimal approximation)(*).

The recurring decimal 1.2014285 can be written as a ratio of two integers having 2402833 as the numerator and 1999980 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.