Finding the Fourth Proportional to 743,149.50, 1,025,511.99 and 420,861.91
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Solution
The fourth proportional to 743,149.50, 1,025,511.99 and 420,861.91 is: 580,769.99
Step by Step Solution
- Step 1: Write the proportion equation
743,149.50 : 1,025,511.99 = 420,861.91 : x - Step 2: Convert to fraction form
743,149.50/1,025,511.99 = 420,861.91/x - Step 3: Cross multiply
743,149.50x = 1,025,511.99 × 420,861.91 - Step 4: Simplify right side
743,149.50x = 431,598,929,711.74 - Step 5: Solve for x
x = 431,598,929,711.74/743,149.50 - Step 6: Final answer
x = 580,769.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.