Finding the Fourth Proportional to 721,618.75, 1,082,405.76 and 342,812.08
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Solution
The fourth proportional to 721,618.75, 1,082,405.76 and 342,812.08 is: 514,207.50
Step by Step Solution
- Step 1: Write the proportion equation
721,618.75 : 1,082,405.76 = 342,812.08 : x - Step 2: Convert to fraction form
721,618.75/1,082,405.76 = 342,812.08/x - Step 3: Cross multiply
721,618.75x = 1,082,405.76 × 342,812.08 - Step 4: Simplify right side
721,618.75x = 371,061,769,989.58 - Step 5: Solve for x
x = 371,061,769,989.58/721,618.75 - Step 6: Final answer
x = 514,207.50
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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.