Finding the Fourth Proportional to 431,569.80, 647,354.70 and 260,327.70
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Solution
The fourth proportional to 431,569.80, 647,354.70 and 260,327.70 is: 390,491.55
Step by Step Solution
- Step 1: Write the proportion equation
431,569.80 : 647,354.70 = 260,327.70 : x - Step 2: Convert to fraction form
431,569.80/647,354.70 = 260,327.70/x - Step 3: Cross multiply
431,569.80x = 647,354.70 × 260,327.70 - Step 4: Simplify right side
431,569.80x = 168,524,360,135.19 - Step 5: Solve for x
x = 168,524,360,135.19/431,569.80 - Step 6: Final answer
x = 390,491.55
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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.