Finding the Fourth Proportional to 603,612,007.20, 905,418,010.80 and 418,989,403.80
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Solution
The fourth proportional to 603,612,007.20, 905,418,010.80 and 418,989,403.80 is: 628,484,105.70
Step by Step Solution
- Step 1: Write the proportion equation
603,612,007.20 : 905,418,010.80 = 418,989,403.80 : x - Step 2: Convert to fraction form
603,612,007.20/905,418,010.80 = 418,989,403.80/x - Step 3: Cross multiply
603,612,007.20x = 905,418,010.80 × 418,989,403.80 - Step 4: Simplify right side
603,612,007.20x = 379,360,552,534,873,920 - Step 5: Solve for x
x = 379,360,552,534,873,920/603,612,007.20 - Step 6: Final answer
x = 628,484,105.70
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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.