Finding the Fourth Proportional to 918,117.21, 1,376,251.97 and 378,766.87
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Solution
The fourth proportional to 918,117.21, 1,376,251.97 and 378,766.87 is: 567,769.17
Step by Step Solution
- Step 1: Write the proportion equation
918,117.21 : 1,376,251.97 = 378,766.87 : x - Step 2: Convert to fraction form
918,117.21/1,376,251.97 = 378,766.87/x - Step 3: Cross multiply
918,117.21x = 1,376,251.97 × 378,766.87 - Step 4: Simplify right side
918,117.21x = 521,278,644,126.97 - Step 5: Solve for x
x = 521,278,644,126.97/918,117.21 - Step 6: Final answer
x = 567,769.17
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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.