Finding the Fourth Proportional to 726,129.70, 1,090,231.35 and 411,201.70
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Solution
The fourth proportional to 726,129.70, 1,090,231.35 and 411,201.70 is: 617,389.68
Step by Step Solution
- Step 1: Write the proportion equation
726,129.70 : 1,090,231.35 = 411,201.70 : x - Step 2: Convert to fraction form
726,129.70/1,090,231.35 = 411,201.70/x - Step 3: Cross multiply
726,129.70x = 1,090,231.35 × 411,201.70 - Step 4: Simplify right side
726,129.70x = 448,304,984,513.30 - Step 5: Solve for x
x = 448,304,984,513.30/726,129.70 - Step 6: Final answer
x = 617,389.68
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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.