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Finding the Fourth Proportional to 624,340.81, 861,497.62 and 379,198

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Solution

The fourth proportional to 624,340.81, 861,497.62 and 379,198 is: 523,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,340.81 : 861,497.62 = 379,198 : x
  2. Step 2: Convert to fraction form
    624,340.81/861,497.62 = 379,198/x
  3. Step 3: Cross multiply
    624,340.81x = 861,497.62 × 379,198
  4. Step 4: Simplify right side
    624,340.81x = 326,678,174,508.76
  5. Step 5: Solve for x
    x = 326,678,174,508.76/624,340.81
  6. Step 6: Final answer
    x = 523,236.94

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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.