Finding the Fourth Proportional to 485,572,279.80, 728,358,419.70 and 434,553,943.80
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Solution
The fourth proportional to 485,572,279.80, 728,358,419.70 and 434,553,943.80 is: 651,830,915.70
Step by Step Solution
- Step 1: Write the proportion equation
485,572,279.80 : 728,358,419.70 = 434,553,943.80 : x - Step 2: Convert to fraction form
485,572,279.80/728,358,419.70 = 434,553,943.80/x - Step 3: Cross multiply
485,572,279.80x = 728,358,419.70 × 434,553,943.80 - Step 4: Simplify right side
485,572,279.80x = 316,511,023,780,570,624 - Step 5: Solve for x
x = 316,511,023,780,570,624/485,572,279.80 - Step 6: Final answer
x = 651,830,915.70
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1.5x scale
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.