Home / 8,279,721.60-12,419,582.40-7,907,712.90

Finding the Fourth Proportional to 8,279,721.60, 12,419,582.40 and 7,907,712.90

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Solution

The fourth proportional to 8,279,721.60, 12,419,582.40 and 7,907,712.90 is: 11,861,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279,721.60 : 12,419,582.40 = 7,907,712.90 : x
  2. Step 2: Convert to fraction form
    8,279,721.60/12,419,582.40 = 7,907,712.90/x
  3. Step 3: Cross multiply
    8,279,721.60x = 12,419,582.40 × 7,907,712.90
  4. Step 4: Simplify right side
    8,279,721.60x = 98,210,491,957,092.97
  5. Step 5: Solve for x
    x = 98,210,491,957,092.97/8,279,721.60
  6. Step 6: Final answer
    x = 11,861,569.35

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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.