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Finding the Fourth Proportional to 527,754.78, 789,763.50 and 328,169.16

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Solution

The fourth proportional to 527,754.78, 789,763.50 and 328,169.16 is: 491,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,754.78 : 789,763.50 = 328,169.16 : x
  2. Step 2: Convert to fraction form
    527,754.78/789,763.50 = 328,169.16/x
  3. Step 3: Cross multiply
    527,754.78x = 789,763.50 × 328,169.16
  4. Step 4: Simplify right side
    527,754.78x = 259,176,024,393.66
  5. Step 5: Solve for x
    x = 259,176,024,393.66/527,754.78
  6. Step 6: Final answer
    x = 491,091.76

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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.