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Finding the Fourth Proportional to 5,324,722.60, 7,978,956.49 and 3,161,487.86

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Solution

The fourth proportional to 5,324,722.60, 7,978,956.49 and 3,161,487.86 is: 4,737,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324,722.60 : 7,978,956.49 = 3,161,487.86 : x
  2. Step 2: Convert to fraction form
    5,324,722.60/7,978,956.49 = 3,161,487.86/x
  3. Step 3: Cross multiply
    5,324,722.60x = 7,978,956.49 × 3,161,487.86
  4. Step 4: Simplify right side
    5,324,722.60x = 25,225,374,099,679.64
  5. Step 5: Solve for x
    x = 25,225,374,099,679.64/5,324,722.60
  6. Step 6: Final answer
    x = 4,737,406.25

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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.