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Finding the Fourth Proportional to 527,750.78, 789,757.50 and 328,165.16

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Solution

The fourth proportional to 527,750.78, 789,757.50 and 328,165.16 is: 491,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,750.78 : 789,757.50 = 328,165.16 : x
  2. Step 2: Convert to fraction form
    527,750.78/789,757.50 = 328,165.16/x
  3. Step 3: Cross multiply
    527,750.78x = 789,757.50 × 328,165.16
  4. Step 4: Simplify right side
    527,750.78x = 259,170,896,348.70
  5. Step 5: Solve for x
    x = 259,170,896,348.70/527,750.78
  6. Step 6: Final answer
    x = 491,085.77

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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.