Finding the Fourth Proportional to 726,135.20, 1,090,239.60 and 411,207.20
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Solution
The fourth proportional to 726,135.20, 1,090,239.60 and 411,207.20 is: 617,397.94
Step by Step Solution
- Step 1: Write the proportion equation
726,135.20 : 1,090,239.60 = 411,207.20 : x - Step 2: Convert to fraction form
726,135.20/1,090,239.60 = 411,207.20/x - Step 3: Cross multiply
726,135.20x = 1,090,239.60 × 411,207.20 - Step 4: Simplify right side
726,135.20x = 448,314,373,245.12 - Step 5: Solve for x
x = 448,314,373,245.12/726,135.20 - Step 6: Final answer
x = 617,397.94
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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.