Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,407/899,999,999,950
- The integer number above the bar is called numerator: 779,422,863,407
- The integer number below the bar is called denominator: 899,999,999,950
- 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 = 779,422,863,407 ÷ 899,999,999,950
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:
779,422,863,407 = 89 × 19,819 × 441,877
779,422,863,407 is a composite number.
Written with exponents:
899,999,999,950 = 2 × 5 × 5 × 19 × 89 × 10,644,589 = 2 × 52 × 19 × 89 × 10,644,589
899,999,999,950 is a composite number.
779,422,863,407/899,999,999,950 =
(779,422,863,407 ÷ 89) / (899,999,999,950 ÷ 89) =
8,757,560,263/10,112,359,550
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.
779,422,863,407/899,999,999,950 =
(89 × 19,819 × 441,877)/(2 × 52 × 19 × 89 × 10,644,589) =
((89 × 19,819 × 441,877) ÷ 89) / ((2 × 52 × 19 × 89 × 10,644,589) ÷ 89) =
(19,819 × 441,877)/(2 × 52 × 19 × 10,644,589) =
8,757,560,263/10,112,359,550
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
8,757,560,263/10,112,359,550 =
8,757,560,263 ÷ 10,112,359,550 =
0.866025403834 ≈
0.87