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Finding the Fourth Proportional to 547,677.25, 820,781.55 and 426,244.42

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Solution

The fourth proportional to 547,677.25, 820,781.55 and 426,244.42 is: 638,795.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,677.25 : 820,781.55 = 426,244.42 : x
  2. Step 2: Convert to fraction form
    547,677.25/820,781.55 = 426,244.42/x
  3. Step 3: Cross multiply
    547,677.25x = 820,781.55 × 426,244.42
  4. Step 4: Simplify right side
    547,677.25x = 349,853,555,726.45
  5. Step 5: Solve for x
    x = 349,853,555,726.45/547,677.25
  6. Step 6: Final answer
    x = 638,795.12

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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.