Finding the Fourth Proportional to 687,446.79, 948,686.79 and 381,542.88
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Solution
The fourth proportional to 687,446.79, 948,686.79 and 381,542.88 is: 526,534.85
Step by Step Solution
- Step 1: Write the proportion equation
687,446.79 : 948,686.79 = 381,542.88 : x - Step 2: Convert to fraction form
687,446.79/948,686.79 = 381,542.88/x - Step 3: Cross multiply
687,446.79x = 948,686.79 × 381,542.88 - Step 4: Simplify right side
687,446.79x = 361,964,690,074.56 - Step 5: Solve for x
x = 361,964,690,074.56/687,446.79 - Step 6: Final answer
x = 526,534.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.