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Finding the Fourth Proportional to 3,988,881.86, 5,982,447.78 and 1,148,377.10

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Solution

The fourth proportional to 3,988,881.86, 5,982,447.78 and 1,148,377.10 is: 1,722,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,881.86 : 5,982,447.78 = 1,148,377.10 : x
  2. Step 2: Convert to fraction form
    3,988,881.86/5,982,447.78 = 1,148,377.10/x
  3. Step 3: Cross multiply
    3,988,881.86x = 5,982,447.78 × 1,148,377.10
  4. Step 4: Simplify right side
    3,988,881.86x = 6,870,106,002,585.60
  5. Step 5: Solve for x
    x = 6,870,106,002,585.60/3,988,881.86
  6. Step 6: Final answer
    x = 1,722,313.73

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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.