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Finding the Fourth Proportional to 979,408.20, 1,469,112.30 and 979,408.20

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Solution

The fourth proportional to 979,408.20, 1,469,112.30 and 979,408.20 is: 1,469,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,408.20 : 1,469,112.30 = 979,408.20 : x
  2. Step 2: Convert to fraction form
    979,408.20/1,469,112.30 = 979,408.20/x
  3. Step 3: Cross multiply
    979,408.20x = 1,469,112.30 × 979,408.20
  4. Step 4: Simplify right side
    979,408.20x = 1,438,860,633,340.86
  5. Step 5: Solve for x
    x = 1,438,860,633,340.86/979,408.20
  6. Step 6: Final answer
    x = 1,469,112.30

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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.