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Finding the Fourth Proportional to 624,506.96, 861,836.41 and 379,408.28

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Solution

The fourth proportional to 624,506.96, 861,836.41 and 379,408.28 is: 523,593.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,506.96 : 861,836.41 = 379,408.28 : x
  2. Step 2: Convert to fraction form
    624,506.96/861,836.41 = 379,408.28/x
  3. Step 3: Cross multiply
    624,506.96x = 861,836.41 × 379,408.28
  4. Step 4: Simplify right side
    624,506.96x = 326,987,863,753.25
  5. Step 5: Solve for x
    x = 326,987,863,753.25/624,506.96
  6. Step 6: Final answer
    x = 523,593.63

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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.