What is 1.1538153815381538... as a Fraction?

1.1538 equals 115379999 as a fraction.

How do you turn 1.1538 repeating into a fraction?

Detailed Answer:

Step 1: To convert 1.1538 repeating into a fraction, begin writing this simple equation:

n = 1.1538 (equation 1)

Step 2: Notice that there are 4 digits in the repeating block (1538), so multiply both sides by 10⁴ = 10000.

10000 × n = 11538.1538 (equation 2)

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

10000 × n = 11538.1538
    1 × n = 1.1538
 9999 × n = 11537

n = 115379999 (answer)

1.1538 = 115379999 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 115379999 is also equal to 115389999 when expressed as a mixed number.

The repeating decimal 1.1538 (vinculum notation) has a repeated block length of 4. It is also represented as 1.153815381538... (ellipsis notation) which equals approximately 1.15381538153815381538 (decimal approximation)(*).

The recurring decimal 1.1538 can be written as a ratio of two integers having 11537 as the numerator and 9999 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.