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Finding the Fourth Proportional to 391,569.55, 587,354.33 and 329,568.10

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Solution

The fourth proportional to 391,569.55, 587,354.33 and 329,568.10 is: 494,352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,569.55 : 587,354.33 = 329,568.10 : x
  2. Step 2: Convert to fraction form
    391,569.55/587,354.33 = 329,568.10/x
  3. Step 3: Cross multiply
    391,569.55x = 587,354.33 × 329,568.10
  4. Step 4: Simplify right side
    391,569.55x = 193,573,248,917.03
  5. Step 5: Solve for x
    x = 193,573,248,917.03/391,569.55
  6. Step 6: Final answer
    x = 494,352.15

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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.