Finding the Fourth Proportional to 1,314,248,331.97, 1,971,635,561.25 and 485,207,014.96
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Solution
The fourth proportional to 1,314,248,331.97, 1,971,635,561.25 and 485,207,014.96 is: 727,907,642.71
Step by Step Solution
- Step 1: Write the proportion equation
1,314,248,331.97 : 1,971,635,561.25 = 485,207,014.96 : x - Step 2: Convert to fraction form
1,314,248,331.97/1,971,635,561.25 = 485,207,014.96/x - Step 3: Cross multiply
1,314,248,331.97x = 1,971,635,561.25 × 485,207,014.96 - Step 4: Simplify right side
1,314,248,331.97x = 956,651,405,263,096,704 - Step 5: Solve for x
x = 956,651,405,263,096,704/1,314,248,331.97 - Step 6: Final answer
x = 727,907,642.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.