Finding the Fourth Proportional to 663,126.75, 915,115.05 and 361,320.75
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Solution
The fourth proportional to 663,126.75, 915,115.05 and 361,320.75 is: 498,622.71
Step by Step Solution
- Step 1: Write the proportion equation
663,126.75 : 915,115.05 = 361,320.75 : x - Step 2: Convert to fraction form
663,126.75/915,115.05 = 361,320.75/x - Step 3: Cross multiply
663,126.75x = 915,115.05 × 361,320.75 - Step 4: Simplify right side
663,126.75x = 330,650,056,202.29 - Step 5: Solve for x
x = 330,650,056,202.29/663,126.75 - Step 6: Final answer
x = 498,622.71
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.