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Finding the Fourth Proportional to 605,469.40, 908,204.10 and 418,845.40

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Solution

The fourth proportional to 605,469.40, 908,204.10 and 418,845.40 is: 628,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,469.40 : 908,204.10 = 418,845.40 : x
  2. Step 2: Convert to fraction form
    605,469.40/908,204.10 = 418,845.40/x
  3. Step 3: Cross multiply
    605,469.40x = 908,204.10 × 418,845.40
  4. Step 4: Simplify right side
    605,469.40x = 380,397,109,546.14
  5. Step 5: Solve for x
    x = 380,397,109,546.14/605,469.40
  6. Step 6: Final answer
    x = 628,268.10

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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.