Finding the Fourth Proportional to 499,251.20, 748,876.80 and 387,276.80
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Solution
The fourth proportional to 499,251.20, 748,876.80 and 387,276.80 is: 580,915.20
Step by Step Solution
- Step 1: Write the proportion equation
499,251.20 : 748,876.80 = 387,276.80 : x - Step 2: Convert to fraction form
499,251.20/748,876.80 = 387,276.80/x - Step 3: Cross multiply
499,251.20x = 748,876.80 × 387,276.80 - Step 4: Simplify right side
499,251.20x = 290,022,610,698.24 - Step 5: Solve for x
x = 290,022,610,698.24/499,251.20 - Step 6: Final answer
x = 580,915.20
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1.5x scale
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.