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Finding the Fourth Proportional to 617,958.20, 926,418.90 and 322,470.20

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Solution

The fourth proportional to 617,958.20, 926,418.90 and 322,470.20 is: 483,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,958.20 : 926,418.90 = 322,470.20 : x
  2. Step 2: Convert to fraction form
    617,958.20/926,418.90 = 322,470.20/x
  3. Step 3: Cross multiply
    617,958.20x = 926,418.90 × 322,470.20
  4. Step 4: Simplify right side
    617,958.20x = 298,742,487,966.78
  5. Step 5: Solve for x
    x = 298,742,487,966.78/617,958.20
  6. Step 6: Final answer
    x = 483,434.78

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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.