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Finding the Fourth Proportional to 427,630.96, 641,003.52 and 351,956

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Solution

The fourth proportional to 427,630.96, 641,003.52 and 351,956 is: 527,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,630.96 : 641,003.52 = 351,956 : x
  2. Step 2: Convert to fraction form
    427,630.96/641,003.52 = 351,956/x
  3. Step 3: Cross multiply
    427,630.96x = 641,003.52 × 351,956
  4. Step 4: Simplify right side
    427,630.96x = 225,605,034,885.12
  5. Step 5: Solve for x
    x = 225,605,034,885.12/427,630.96
  6. Step 6: Final answer
    x = 527,569.46

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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.