What is 7.63846384638463846... as a Fraction?

7.63846 equals 254593333 as a fraction.

How do you turn 7.63846 repeating into a fraction?

Detailed Answer:

Step 1: To convert 7.63846 repeating into a fraction, begin writing this simple equation:

n = 7.63846 (equation 1)

Step 2: Notice that there are 4 digits in the repeating block (3846) and 1 digit in the non-repeating part (6). Multiply both sides by 10⁵ = 100000.

100000 × n = 763846.3846 (equation 2)

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

100000 × n = 763846.3846
    10 × n = 7.63846
 99990 × n = 763770

76377099990 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 30 (the GCF - greatest common factor).

n = 76377099990 = 763770 ÷ 3099990 ÷ 30 = 254593333. So,

7.63846 = 254593333 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 254593333 is also equal to 721283333 when expressed as a mixed number.

The repeating decimal 7.63846 (vinculum notation) has a repeated block length of 4. It is also represented as 7.6384638463846... (ellipsis notation) which equals approximately 7.638463846384638463846 (decimal approximation)(*).

The recurring decimal 7.63846 can be written as a ratio of two integers having 25459 as the numerator and 3333 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.