What is 1.3076923076923076923076923076923076923... as a Fraction?

1.3076923 equals 1713 as a fraction.

How do you turn 1.3076923 repeating into a fraction?

Detailed Answer:

Step 1: To convert 1.3076923 repeating into a fraction, begin writing this simple equation:

n = 1.3076923 (equation 1)

Step 2: Notice that there are 6 digits in the repeating block (076923) and 1 digit in the non-repeating part (3). Multiply both sides by 10⁷ = 10000000.

10000000 × n = 13076923.076923 (equation 2)

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

10000000 × n = 13076923.076923
      10 × n = 1.3076923
 9999990 × n = 13076910

130769109999990 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 769230 (the GCF - greatest common factor).

n = 130769109999990 = 13076910 ÷ 7692309999990 ÷ 769230 = 1713. So,

1.3076923 = 1713 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 1713 is also equal to 1413 when expressed as a mixed number.

The repeating decimal 1.3076923 (vinculum notation) has a repeated block length of 6. It is also represented as 1.3076923076923076923... (ellipsis notation) which equals approximately 1.3076923076923076923076923076923 (decimal approximation)(*).

The recurring decimal 1.3076923 can be written as a ratio of two integers having 17 as the numerator and 13 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.