Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,438/900,000,000,099
- The integer number above the bar is called numerator: 779,422,863,438
- The integer number below the bar is called denominator: 900,000,000,099
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,438 ÷ 900,000,000,099
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
Written with exponents:
779,422,863,438 = 2 × 3 × 3 × 1,381 × 31,355,011 = 2 × 32 × 1,381 × 31,355,011
779,422,863,438 is a composite number.
Written with exponents:
900,000,000,099 = 3 × 3 × 3 × 37 × 37 × 24,348,673 = 33 × 372 × 24,348,673
900,000,000,099 is a composite number.
779,422,863,438/900,000,000,099 =
(779,422,863,438 ÷ 9) / (900,000,000,099 ÷ 9) =
86,602,540,382/100,000,000,011
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
779,422,863,438/900,000,000,099 =
(2 × 32 × 1,381 × 31,355,011)/(33 × 372 × 24,348,673) =
((2 × 32 × 1,381 × 31,355,011) ÷ 32) / ((33 × 372 × 24,348,673) ÷ 32) =
(2 × 1,381 × 31,355,011)/(3 × 372 × 24,348,673) =
86,602,540,382/100,000,000,011
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
86,602,540,382/100,000,000,011 =
86,602,540,382 ÷ 100,000,000,011 =
0.866025403725 ≈
0.87