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Finding the Fourth Proportional to 403,494.20, 605,435.70 and 284,910.20

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Solution

The fourth proportional to 403,494.20, 605,435.70 and 284,910.20 is: 427,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,494.20 : 605,435.70 = 284,910.20 : x
  2. Step 2: Convert to fraction form
    403,494.20/605,435.70 = 284,910.20/x
  3. Step 3: Cross multiply
    403,494.20x = 605,435.70 × 284,910.20
  4. Step 4: Simplify right side
    403,494.20x = 172,494,806,374.14
  5. Step 5: Solve for x
    x = 172,494,806,374.14/403,494.20
  6. Step 6: Final answer
    x = 427,502.57

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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.