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Finding the Fourth Proportional to 418,874.60, 628,311.90 and 418,874.60

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Solution

The fourth proportional to 418,874.60, 628,311.90 and 418,874.60 is: 628,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,874.60 : 628,311.90 = 418,874.60 : x
  2. Step 2: Convert to fraction form
    418,874.60/628,311.90 = 418,874.60/x
  3. Step 3: Cross multiply
    418,874.60x = 628,311.90 × 418,874.60
  4. Step 4: Simplify right side
    418,874.60x = 263,183,895,787.74
  5. Step 5: Solve for x
    x = 263,183,895,787.74/418,874.60
  6. Step 6: Final answer
    x = 628,311.90

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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.