Finding the Fourth Proportional to 743,115.76, 1,025,562.99 and 420,883.18
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Solution
The fourth proportional to 743,115.76, 1,025,562.99 and 420,883.18 is: 580,854.61
Step by Step Solution
- Step 1: Write the proportion equation
743,115.76 : 1,025,562.99 = 420,883.18 : x - Step 2: Convert to fraction form
743,115.76/1,025,562.99 = 420,883.18/x - Step 3: Cross multiply
743,115.76x = 1,025,562.99 × 420,883.18 - Step 4: Simplify right side
743,115.76x = 431,642,212,817.87 - Step 5: Solve for x
x = 431,642,212,817.87/743,115.76 - Step 6: Final answer
x = 580,854.61
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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.