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Finding the Fourth Proportional to 526,917.87, 790,378.82 and 127,558

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Solution

The fourth proportional to 526,917.87, 790,378.82 and 127,558 is: 191,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,917.87 : 790,378.82 = 127,558 : x
  2. Step 2: Convert to fraction form
    526,917.87/790,378.82 = 127,558/x
  3. Step 3: Cross multiply
    526,917.87x = 790,378.82 × 127,558
  4. Step 4: Simplify right side
    526,917.87x = 100,819,141,521.56
  5. Step 5: Solve for x
    x = 100,819,141,521.56/526,917.87
  6. Step 6: Final answer
    x = 191,337.49

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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.