Finding the Fourth Proportional to 647,121.20, 970,681.80 and 532,959.80
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Solution
The fourth proportional to 647,121.20, 970,681.80 and 532,959.80 is: 799,439.70
Step by Step Solution
- Step 1: Write the proportion equation
647,121.20 : 970,681.80 = 532,959.80 : x - Step 2: Convert to fraction form
647,121.20/970,681.80 = 532,959.80/x - Step 3: Cross multiply
647,121.20x = 970,681.80 × 532,959.80 - Step 4: Simplify right side
647,121.20x = 517,334,377,991.64 - Step 5: Solve for x
x = 517,334,377,991.64/647,121.20 - Step 6: Final answer
x = 799,439.70
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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.