Finding the Fourth Proportional to 804,959.20, 1,207,438.80 and 431,711.20
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Solution
The fourth proportional to 804,959.20, 1,207,438.80 and 431,711.20 is: 647,566.80
Step by Step Solution
- Step 1: Write the proportion equation
804,959.20 : 1,207,438.80 = 431,711.20 : x - Step 2: Convert to fraction form
804,959.20/1,207,438.80 = 431,711.20/x - Step 3: Cross multiply
804,959.20x = 1,207,438.80 × 431,711.20 - Step 4: Simplify right side
804,959.20x = 521,264,853,274.56 - Step 5: Solve for x
x = 521,264,853,274.56/804,959.20 - Step 6: Final answer
x = 647,566.80
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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.