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Finding the Fourth Proportional to 526,918.87, 790,380.32 and 127,559

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Solution

The fourth proportional to 526,918.87, 790,380.32 and 127,559 is: 191,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,918.87 : 790,380.32 = 127,559 : x
  2. Step 2: Convert to fraction form
    526,918.87/790,380.32 = 127,559/x
  3. Step 3: Cross multiply
    526,918.87x = 790,380.32 × 127,559
  4. Step 4: Simplify right side
    526,918.87x = 100,820,123,238.88
  5. Step 5: Solve for x
    x = 100,820,123,238.88/526,918.87
  6. Step 6: Final answer
    x = 191,338.99

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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.