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Finding the Fourth Proportional to 866,408.30, 1,297,279.65 and 866,408.30

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Solution

The fourth proportional to 866,408.30, 1,297,279.65 and 866,408.30 is: 1,297,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,408.30 : 1,297,279.65 = 866,408.30 : x
  2. Step 2: Convert to fraction form
    866,408.30/1,297,279.65 = 866,408.30/x
  3. Step 3: Cross multiply
    866,408.30x = 1,297,279.65 × 866,408.30
  4. Step 4: Simplify right side
    866,408.30x = 1,123,973,856,181.10
  5. Step 5: Solve for x
    x = 1,123,973,856,181.10/866,408.30
  6. Step 6: Final answer
    x = 1,297,279.65

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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.