Finding the Fourth Proportional to 678,850.92, 936,982.62 and 392,329.62
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Solution
The fourth proportional to 678,850.92, 936,982.62 and 392,329.62 is: 541,512.17
Step by Step Solution
- Step 1: Write the proportion equation
678,850.92 : 936,982.62 = 392,329.62 : x - Step 2: Convert to fraction form
678,850.92/936,982.62 = 392,329.62/x - Step 3: Cross multiply
678,850.92x = 936,982.62 × 392,329.62 - Step 4: Simplify right side
678,850.92x = 367,606,035,251.20 - Step 5: Solve for x
x = 367,606,035,251.20/678,850.92 - Step 6: Final answer
x = 541,512.17
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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.