Finding the Fourth Proportional to 686,990.66, 948,028.82 and 396,592.43
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Solution
The fourth proportional to 686,990.66, 948,028.82 and 396,592.43 is: 547,286.99
Step by Step Solution
- Step 1: Write the proportion equation
686,990.66 : 948,028.82 = 396,592.43 : x - Step 2: Convert to fraction form
686,990.66/948,028.82 = 396,592.43/x - Step 3: Cross multiply
686,990.66x = 948,028.82 × 396,592.43 - Step 4: Simplify right side
686,990.66x = 375,981,053,736.02 - Step 5: Solve for x
x = 375,981,053,736.02/686,990.66 - Step 6: Final answer
x = 547,286.99
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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.