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Finding the Fourth Proportional to 435,417.90, 653,126.85 and 329,129.70

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Solution

The fourth proportional to 435,417.90, 653,126.85 and 329,129.70 is: 493,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,417.90 : 653,126.85 = 329,129.70 : x
  2. Step 2: Convert to fraction form
    435,417.90/653,126.85 = 329,129.70/x
  3. Step 3: Cross multiply
    435,417.90x = 653,126.85 × 329,129.70
  4. Step 4: Simplify right side
    435,417.90x = 214,963,444,202.45
  5. Step 5: Solve for x
    x = 214,963,444,202.45/435,417.90
  6. Step 6: Final answer
    x = 493,694.55

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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.