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Finding the Fourth Proportional to 638,003.88, 956,103.08 and 353,819.43

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Solution

The fourth proportional to 638,003.88, 956,103.08 and 353,819.43 is: 530,228.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,003.88 : 956,103.08 = 353,819.43 : x
  2. Step 2: Convert to fraction form
    638,003.88/956,103.08 = 353,819.43/x
  3. Step 3: Cross multiply
    638,003.88x = 956,103.08 × 353,819.43
  4. Step 4: Simplify right side
    638,003.88x = 338,287,845,017.75
  5. Step 5: Solve for x
    x = 338,287,845,017.75/638,003.88
  6. Step 6: Final answer
    x = 530,228.51

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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.