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Finding the Fourth Proportional to 6,447,621.74, 8,897,791.47 and 3,694,253.89

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Solution

The fourth proportional to 6,447,621.74, 8,897,791.47 and 3,694,253.89 is: 5,098,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447,621.74 : 8,897,791.47 = 3,694,253.89 : x
  2. Step 2: Convert to fraction form
    6,447,621.74/8,897,791.47 = 3,694,253.89/x
  3. Step 3: Cross multiply
    6,447,621.74x = 8,897,791.47 × 3,694,253.89
  4. Step 4: Simplify right side
    6,447,621.74x = 32,870,700,750,456.32
  5. Step 5: Solve for x
    x = 32,870,700,750,456.32/6,447,621.74
  6. Step 6: Final answer
    x = 5,098,112.46

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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.