What is 5.288571857185718571... as a Fraction?

5.288571 equals 1762681333300 as a fraction.

How do you turn 5.288571 repeating into a fraction?

Detailed Answer:

Step 1: To convert 5.288571 repeating into a fraction, begin writing this simple equation:

n = 5.288571 (equation 1)

Step 2: Notice that there are 4 digits in the repeating block (8571) and 2 digits in the non-repeating part (28). Multiply both sides by 10⁶ = 1000000.

1000000 × n = 5288571.8571 (equation 2)

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

1000000 × n = 5288571.8571
    100 × n = 5.288571
 999900 × n = 5288043

5288043999900 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 3 (the GCF - greatest common factor).

n = 5288043999900 = 5288043 ÷ 3999900 ÷ 3 = 1762681333300. So,

5.288571 = 1762681333300 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 1762681333300 is also equal to 596181333300 when expressed as a mixed number.

The repeating decimal 5.288571 (vinculum notation) has a repeated block length of 4. It is also represented as 5.28857185718571... (ellipsis notation) which equals approximately 5.2885718571857185718571 (decimal approximation)(*).

The recurring decimal 5.288571 can be written as a ratio of two integers having 1762681 as the numerator and 333300 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.