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Finding the Fourth Proportional to 634,257.72, 949,520.34 and 423,372.60

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Solution

The fourth proportional to 634,257.72, 949,520.34 and 423,372.60 is: 633,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,257.72 : 949,520.34 = 423,372.60 : x
  2. Step 2: Convert to fraction form
    634,257.72/949,520.34 = 423,372.60/x
  3. Step 3: Cross multiply
    634,257.72x = 949,520.34 × 423,372.60
  4. Step 4: Simplify right side
    634,257.72x = 402,000,895,098.68
  5. Step 5: Solve for x
    x = 402,000,895,098.68/634,257.72
  6. Step 6: Final answer
    x = 633,813.17

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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.