Finding the Fourth Proportional to 638,197.05, 880,711.90 and 351,717.13
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Solution
The fourth proportional to 638,197.05, 880,711.90 and 351,717.13 is: 485,369.62
Step by Step Solution
- Step 1: Write the proportion equation
638,197.05 : 880,711.90 = 351,717.13 : x - Step 2: Convert to fraction form
638,197.05/880,711.90 = 351,717.13/x - Step 3: Cross multiply
638,197.05x = 880,711.90 × 351,717.13 - Step 4: Simplify right side
638,197.05x = 309,761,461,824.85 - Step 5: Solve for x
x = 309,761,461,824.85/638,197.05 - Step 6: Final answer
x = 485,369.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.