2. Write the number as an improper fraction.
- 1.27272727278 can be written as an improper fraction.
- An improper fraction = the numerator is larger than or equal to the denominator..
Write down the number divided by 1, as a fraction:
1.27272727278 = 1.27272727278/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
1.27272727278/1 =
(1.27272727278 × 100,000,000,000)/(1 × 100,000,000,000) =
127,272,727,278/100,000,000,000
3. Reduce (simplify) the fraction above:
127,272,727,278/100,000,000,000
to the lowest terms, to its simplest equivalent form, irreducible.
To reduce a fraction to the lowest terms divide the numerator and denominator by their greatest (highest) common factor (divisor), GCF.
Factor the numerator and denominator (prime factorization).
127,272,727,278 = 2 × 34 × 785,634,119
100,000,000,000 = 211 × 511
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (2 × 34 × 785,634,119; 211 × 511) = 2
Divide both the numerator and the denominator by their GCF.
127,272,727,278/100,000,000,000 =
(2 × 34 × 785,634,119)/(211 × 511) =
((2 × 34 × 785,634,119) ÷ 2) / ((211 × 511) ÷ 2) =
(34 × 785,634,119)/(210 × 511) =
63,636,363,639/50,000,000,000
4. The fraction is an improper one, rewrite it as a mixed number (mixed fraction):
- A mixed number = an integer number and a proper fraction, of the same sign.
- Example 1: 2 1/5; Example 2: - 1 3/7.
- A proper fraction = the numerator is smaller than the denominator.
63,636,363,639 ÷ 50,000,000,000 = 1, remainder = 13,636,363,639 ⇒
63,636,363,639 = 1 × 50,000,000,000 + 13,636,363,639 ⇒
63,636,363,639/50,000,000,000 =
(1 × 50,000,000,000 + 13,636,363,639) / 50,000,000,000 =
(1 × 50,000,000,000) / 50,000,000,000 + 13,636,363,639/50,000,000,000 =
1 + 13,636,363,639/50,000,000,000 =
1 13,636,363,639/50,000,000,000