What is 0.40888... as a Fraction?

0.408 equals 92225 as a fraction.

How do you turn 0.408 repeating into a fraction?

Detailed Answer:

Step 1: To convert 0.408 repeating into a fraction, begin writing this simple equation:

n = 0.408 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (8) and 2 digits in the non-repeating part (40). Multiply both sides by 10³ = 1000.

1000 × n = 408.8 (equation 2)

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

1000 × n = 408.8
 100 × n = 0.408
 900 × n = 368

368900 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 4 (the GCF - greatest common factor).

n = 368900 = 368 ÷ 4900 ÷ 4 = 92225. So,

0.408 = 92225 as the lowest possible fraction.

The repeating decimal 0.408 (vinculum notation) has a repeated block length of 1. It is also represented as 0.40888... (ellipsis notation) which equals approximately 0.4088888 (decimal approximation)(*).

The recurring decimal 0.408 can be written as a ratio of two integers having 92 as the numerator and 225 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.