What is 12.384384384... as a Fraction?

12.384 equals 4124333 as a fraction.

How do you turn 12.384 repeating into a fraction?

Detailed Answer:

Step 1: To convert 12.384 repeating into a fraction, begin writing this simple equation:

n = 12.384 (equation 1)

Step 2: Notice that there are 3 digits in the repeating block (384), so multiply both sides by 10³ = 1000.

1000 × n = 12384.384 (equation 2)

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

1000 × n = 12384.384
   1 × n = 12.384
 999 × n = 12372

12372999 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 = 12372999 = 12372 ÷ 3999 ÷ 3 = 4124333. So,

12.384 = 4124333 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 4124333 is also equal to 12128333 when expressed as a mixed number.

The repeating decimal 12.384 (vinculum notation) has a repeated block length of 3. It is also represented as 12.384384384... (ellipsis notation) which equals approximately 12.384384384384384 (decimal approximation)(*).

The recurring decimal 12.384 can be written as a ratio of two integers having 4124 as the numerator and 333 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.