Finding the Fourth Proportional to 637,687.56, 879,943.71 and 392,633.40
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Solution
The fourth proportional to 637,687.56, 879,943.71 and 392,633.40 is: 541,793.99
Step by Step Solution
- Step 1: Write the proportion equation
637,687.56 : 879,943.71 = 392,633.40 : x - Step 2: Convert to fraction form
637,687.56/879,943.71 = 392,633.40/x - Step 3: Cross multiply
637,687.56x = 879,943.71 × 392,633.40 - Step 4: Simplify right side
637,687.56x = 345,495,290,665.91 - Step 5: Solve for x
x = 345,495,290,665.91/637,687.56 - Step 6: Final answer
x = 541,793.99
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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.