Home / 1,269,129.60-1,904,385.60-521,251.20

Finding the Fourth Proportional to 1,269,129.60, 1,904,385.60 and 521,251.20

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Solution

The fourth proportional to 1,269,129.60, 1,904,385.60 and 521,251.20 is: 782,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,129.60 : 1,904,385.60 = 521,251.20 : x
  2. Step 2: Convert to fraction form
    1,269,129.60/1,904,385.60 = 521,251.20/x
  3. Step 3: Cross multiply
    1,269,129.60x = 1,904,385.60 × 521,251.20
  4. Step 4: Simplify right side
    1,269,129.60x = 992,663,279,262.72
  5. Step 5: Solve for x
    x = 992,663,279,262.72/1,269,129.60
  6. Step 6: Final answer
    x = 782,160.69

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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.