Finding the Fourth Proportional to 472,394,536.80, 708,591,805.20 and 407,771,311.20
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Solution
The fourth proportional to 472,394,536.80, 708,591,805.20 and 407,771,311.20 is: 611,656,966.80
Step by Step Solution
- Step 1: Write the proportion equation
472,394,536.80 : 708,591,805.20 = 407,771,311.20 : x - Step 2: Convert to fraction form
472,394,536.80/708,591,805.20 = 407,771,311.20/x - Step 3: Cross multiply
472,394,536.80x = 708,591,805.20 × 407,771,311.20 - Step 4: Simplify right side
472,394,536.80x = 288,943,409,511,979,008 - Step 5: Solve for x
x = 288,943,409,511,979,008/472,394,536.80 - Step 6: Final answer
x = 611,656,966.80
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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.