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Finding the Fourth Proportional to 391,569.80, 587,354.70 and 329,568.35

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Solution

The fourth proportional to 391,569.80, 587,354.70 and 329,568.35 is: 494,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,569.80 : 587,354.70 = 329,568.35 : x
  2. Step 2: Convert to fraction form
    391,569.80/587,354.70 = 329,568.35/x
  3. Step 3: Cross multiply
    391,569.80x = 587,354.70 × 329,568.35
  4. Step 4: Simplify right side
    391,569.80x = 193,573,519,343.75
  5. Step 5: Solve for x
    x = 193,573,519,343.75/391,569.80
  6. Step 6: Final answer
    x = 494,352.53

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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.