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Finding the Fourth Proportional to 7,826,691.60, 11,740,037.40 and 2,146,906.80

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Solution

The fourth proportional to 7,826,691.60, 11,740,037.40 and 2,146,906.80 is: 3,220,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826,691.60 : 11,740,037.40 = 2,146,906.80 : x
  2. Step 2: Convert to fraction form
    7,826,691.60/11,740,037.40 = 2,146,906.80/x
  3. Step 3: Cross multiply
    7,826,691.60x = 11,740,037.40 × 2,146,906.80
  4. Step 4: Simplify right side
    7,826,691.60x = 25,204,766,126,314.32
  5. Step 5: Solve for x
    x = 25,204,766,126,314.32/7,826,691.60
  6. Step 6: Final answer
    x = 3,220,360.20

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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.