Finding the Fourth Proportional to 746,987,561.40, 1,120,481,342.10 and 488,998,543.80
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Solution
The fourth proportional to 746,987,561.40, 1,120,481,342.10 and 488,998,543.80 is: 733,497,815.70
Step by Step Solution
- Step 1: Write the proportion equation
746,987,561.40 : 1,120,481,342.10 = 488,998,543.80 : x - Step 2: Convert to fraction form
746,987,561.40/1,120,481,342.10 = 488,998,543.80/x - Step 3: Cross multiply
746,987,561.40x = 1,120,481,342.10 × 488,998,543.80 - Step 4: Simplify right side
746,987,561.40x = 547,913,744,641,969,600 - Step 5: Solve for x
x = 547,913,744,641,969,600/746,987,561.40 - Step 6: Final answer
x = 733,497,815.70
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Double scale
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Similar ratio
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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.