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Finding the Fourth Proportional to 578,878.83, 868,614.75 and 275,616.18

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Solution

The fourth proportional to 578,878.83, 868,614.75 and 275,616.18 is: 413,565.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,878.83 : 868,614.75 = 275,616.18 : x
  2. Step 2: Convert to fraction form
    578,878.83/868,614.75 = 275,616.18/x
  3. Step 3: Cross multiply
    578,878.83x = 868,614.75 × 275,616.18
  4. Step 4: Simplify right side
    578,878.83x = 239,404,279,286.66
  5. Step 5: Solve for x
    x = 239,404,279,286.66/578,878.83
  6. Step 6: Final answer
    x = 413,565.44

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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.