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Finding the Fourth Proportional to 688,658.90, 950,489.78 and 471,468.20

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Solution

The fourth proportional to 688,658.90, 950,489.78 and 471,468.20 is: 650,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,658.90 : 950,489.78 = 471,468.20 : x
  2. Step 2: Convert to fraction form
    688,658.90/950,489.78 = 471,468.20/x
  3. Step 3: Cross multiply
    688,658.90x = 950,489.78 × 471,468.20
  4. Step 4: Simplify right side
    688,658.90x = 448,125,698,585.21
  5. Step 5: Solve for x
    x = 448,125,698,585.21/688,658.90
  6. Step 6: Final answer
    x = 650,722.30

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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.