Finding the Fourth Proportional to 378,193.60, 529,864.70 and 378,193.60
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Solution
The fourth proportional to 378,193.60, 529,864.70 and 378,193.60 is: 529,864.70
Step by Step Solution
- Step 1: Write the proportion equation
378,193.60 : 529,864.70 = 378,193.60 : x - Step 2: Convert to fraction form
378,193.60/529,864.70 = 378,193.60/x - Step 3: Cross multiply
378,193.60x = 529,864.70 × 378,193.60 - Step 4: Simplify right side
378,193.60x = 200,391,438,405.92 - Step 5: Solve for x
x = 200,391,438,405.92/378,193.60 - Step 6: Final answer
x = 529,864.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.