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Finding the Fourth Proportional to 526,780.50, 726,725.43 and 308,877.95

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Solution

The fourth proportional to 526,780.50, 726,725.43 and 308,877.95 is: 426,115.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,780.50 : 726,725.43 = 308,877.95 : x
  2. Step 2: Convert to fraction form
    526,780.50/726,725.43 = 308,877.95/x
  3. Step 3: Cross multiply
    526,780.50x = 726,725.43 × 308,877.95
  4. Step 4: Simplify right side
    526,780.50x = 224,469,457,397.64
  5. Step 5: Solve for x
    x = 224,469,457,397.64/526,780.50
  6. Step 6: Final answer
    x = 426,115.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.