Finding the Fourth Proportional to 820,976,531.17, 1,231,913,104.12 and 348,202,035.13
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Solution
The fourth proportional to 820,976,531.17, 1,231,913,104.12 and 348,202,035.13 is: 522,493,193.99
Step by Step Solution
- Step 1: Write the proportion equation
820,976,531.17 : 1,231,913,104.12 = 348,202,035.13 : x - Step 2: Convert to fraction form
820,976,531.17/1,231,913,104.12 = 348,202,035.13/x - Step 3: Cross multiply
820,976,531.17x = 1,231,913,104.12 × 348,202,035.13 - Step 4: Simplify right side
820,976,531.17x = 428,954,649,957,899,520 - Step 5: Solve for x
x = 428,954,649,957,899,520/820,976,531.17 - Step 6: Final answer
x = 522,493,193.99
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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.