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Finding the Fourth Proportional to 769,798.80, 1,062,279.48 and 425,614.84

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Solution

The fourth proportional to 769,798.80, 1,062,279.48 and 425,614.84 is: 587,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,798.80 : 1,062,279.48 = 425,614.84 : x
  2. Step 2: Convert to fraction form
    769,798.80/1,062,279.48 = 425,614.84/x
  3. Step 3: Cross multiply
    769,798.80x = 1,062,279.48 × 425,614.84
  4. Step 4: Simplify right side
    769,798.80x = 452,121,910,915.48
  5. Step 5: Solve for x
    x = 452,121,910,915.48/769,798.80
  6. Step 6: Final answer
    x = 587,324.78

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Double scale
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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.