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Finding the Fourth Proportional to 2,981,739.60, 4,472,648.28 and 851,893.20

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Solution

The fourth proportional to 2,981,739.60, 4,472,648.28 and 851,893.20 is: 1,277,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981,739.60 : 4,472,648.28 = 851,893.20 : x
  2. Step 2: Convert to fraction form
    2,981,739.60/4,472,648.28 = 851,893.20/x
  3. Step 3: Cross multiply
    2,981,739.60x = 4,472,648.28 × 851,893.20
  4. Step 4: Simplify right side
    2,981,739.60x = 3,810,218,655,723.70
  5. Step 5: Solve for x
    x = 3,810,218,655,723.70/2,981,739.60
  6. Step 6: Final answer
    x = 1,277,850.91

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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.