Finding the Fourth Proportional to 687,296.12, 948,423.06 and 381,353.10
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Solution
The fourth proportional to 687,296.12, 948,423.06 and 381,353.10 is: 526,241.99
Step by Step Solution
- Step 1: Write the proportion equation
687,296.12 : 948,423.06 = 381,353.10 : x - Step 2: Convert to fraction form
687,296.12/948,423.06 = 381,353.10/x - Step 3: Cross multiply
687,296.12x = 948,423.06 × 381,353.10 - Step 4: Simplify right side
687,296.12x = 361,684,074,042.49 - Step 5: Solve for x
x = 361,684,074,042.49/687,296.12 - Step 6: Final answer
x = 526,241.99
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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.