Finding the Fourth Proportional to 748,581.40, 1,122,920.70 and 394,287.40
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Solution
The fourth proportional to 748,581.40, 1,122,920.70 and 394,287.40 is: 591,456.70
Step by Step Solution
- Step 1: Write the proportion equation
748,581.40 : 1,122,920.70 = 394,287.40 : x - Step 2: Convert to fraction form
748,581.40/1,122,920.70 = 394,287.40/x - Step 3: Cross multiply
748,581.40x = 1,122,920.70 × 394,287.40 - Step 4: Simplify right side
748,581.40x = 442,753,483,209.18 - Step 5: Solve for x
x = 442,753,483,209.18/748,581.40 - Step 6: Final answer
x = 591,456.70
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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.