Finding the Fourth Proportional to 804,939.70, 1,207,409.55 and 431,691.70
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Solution
The fourth proportional to 804,939.70, 1,207,409.55 and 431,691.70 is: 647,537.55
Step by Step Solution
- Step 1: Write the proportion equation
804,939.70 : 1,207,409.55 = 431,691.70 : x - Step 2: Convert to fraction form
804,939.70/1,207,409.55 = 431,691.70/x - Step 3: Cross multiply
804,939.70x = 1,207,409.55 × 431,691.70 - Step 4: Simplify right side
804,939.70x = 521,228,681,235.74 - Step 5: Solve for x
x = 521,228,681,235.74/804,939.70 - Step 6: Final answer
x = 647,537.55
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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.