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Finding the Fourth Proportional to 8,784,446.22, 12,120,812.49 and 5,519,369.46

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Solution

The fourth proportional to 8,784,446.22, 12,120,812.49 and 5,519,369.46 is: 7,615,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784,446.22 : 12,120,812.49 = 5,519,369.46 : x
  2. Step 2: Convert to fraction form
    8,784,446.22/12,120,812.49 = 5,519,369.46/x
  3. Step 3: Cross multiply
    8,784,446.22x = 12,120,812.49 × 5,519,369.46
  4. Step 4: Simplify right side
    8,784,446.22x = 66,899,242,287,692.55
  5. Step 5: Solve for x
    x = 66,899,242,287,692.55/8,784,446.22
  6. Step 6: Final answer
    x = 7,615,647.09

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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.