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Finding the Fourth Proportional to 624,672, 861,981.21 and 352,723.41

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Solution

The fourth proportional to 624,672, 861,981.21 and 352,723.41 is: 486,720.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,672 : 861,981.21 = 352,723.41 : x
  2. Step 2: Convert to fraction form
    624,672/861,981.21 = 352,723.41/x
  3. Step 3: Cross multiply
    624,672x = 861,981.21 × 352,723.41
  4. Step 4: Simplify right side
    624,672x = 304,040,951,747.13
  5. Step 5: Solve for x
    x = 304,040,951,747.13/624,672
  6. Step 6: Final answer
    x = 486,720.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.