Finding the Fourth Proportional to 543,660.20, 815,490.30 and 431,685.80
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Solution
The fourth proportional to 543,660.20, 815,490.30 and 431,685.80 is: 647,528.70
Step by Step Solution
- Step 1: Write the proportion equation
543,660.20 : 815,490.30 = 431,685.80 : x - Step 2: Convert to fraction form
543,660.20/815,490.30 = 431,685.80/x - Step 3: Cross multiply
543,660.20x = 815,490.30 × 431,685.80 - Step 4: Simplify right side
543,660.20x = 352,035,582,547.74 - Step 5: Solve for x
x = 352,035,582,547.74/543,660.20 - Step 6: Final answer
x = 647,528.70
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Similar ratio
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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.