What is 12.32828... as a Fraction?

12.328 equals 2441198 as a fraction.

How do you turn 12.328 repeating into a fraction?

Detailed Answer:

Step 1: To convert 12.328 repeating into a fraction, begin writing this simple equation:

n = 12.328 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (28) and 1 digit in the non-repeating part (3). Multiply both sides by 10³ = 1000.

1000 × n = 12328.28 (equation 2)

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

1000 × n = 12328.28
  10 × n = 12.328
 990 × n = 12205

12205990 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 5 (the GCF - greatest common factor).

n = 12205990 = 12205 ÷ 5990 ÷ 5 = 2441198. So,

12.328 = 2441198 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 2441198 is also equal to 1265198 when expressed as a mixed number.

The repeating decimal 12.328 (vinculum notation) has a repeated block length of 2. It is also represented as 12.3282828... (ellipsis notation) which equals approximately 12.32828282828 (decimal approximation)(*).

The recurring decimal 12.328 can be written as a ratio of two integers having 2441 as the numerator and 198 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.