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Finding the Fourth Proportional to 7,843,447.88, 10,822,279.05 and 4,578,780.90

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Solution

The fourth proportional to 7,843,447.88, 10,822,279.05 and 4,578,780.90 is: 6,317,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843,447.88 : 10,822,279.05 = 4,578,780.90 : x
  2. Step 2: Convert to fraction form
    7,843,447.88/10,822,279.05 = 4,578,780.90/x
  3. Step 3: Cross multiply
    7,843,447.88x = 10,822,279.05 × 4,578,780.90
  4. Step 4: Simplify right side
    7,843,447.88x = 49,552,844,608,610.16
  5. Step 5: Solve for x
    x = 49,552,844,608,610.16/7,843,447.88
  6. Step 6: Final answer
    x = 6,317,737.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.