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Finding the Fourth Proportional to 442,914.90, 664,372.35 and 411,422.10

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Solution

The fourth proportional to 442,914.90, 664,372.35 and 411,422.10 is: 617,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,914.90 : 664,372.35 = 411,422.10 : x
  2. Step 2: Convert to fraction form
    442,914.90/664,372.35 = 411,422.10/x
  3. Step 3: Cross multiply
    442,914.90x = 664,372.35 × 411,422.10
  4. Step 4: Simplify right side
    442,914.90x = 273,337,467,418.94
  5. Step 5: Solve for x
    x = 273,337,467,418.94/442,914.90
  6. Step 6: Final answer
    x = 617,133.15

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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.