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Finding the Fourth Proportional to 425,422.20, 638,133.30 and 414,924.60

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Solution

The fourth proportional to 425,422.20, 638,133.30 and 414,924.60 is: 622,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,422.20 : 638,133.30 = 414,924.60 : x
  2. Step 2: Convert to fraction form
    425,422.20/638,133.30 = 414,924.60/x
  3. Step 3: Cross multiply
    425,422.20x = 638,133.30 × 414,924.60
  4. Step 4: Simplify right side
    425,422.20x = 264,777,204,249.18
  5. Step 5: Solve for x
    x = 264,777,204,249.18/425,422.20
  6. Step 6: Final answer
    x = 622,386.90

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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.