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Finding the Fourth Proportional to 624,243, 861,362.91 and 379,100.25

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Solution

The fourth proportional to 624,243, 861,362.91 and 379,100.25 is: 523,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,243 : 861,362.91 = 379,100.25 : x
  2. Step 2: Convert to fraction form
    624,243/861,362.91 = 379,100.25/x
  3. Step 3: Cross multiply
    624,243x = 861,362.91 × 379,100.25
  4. Step 4: Simplify right side
    624,243x = 326,542,894,521.73
  5. Step 5: Solve for x
    x = 326,542,894,521.73/624,243
  6. Step 6: Final answer
    x = 523,102.21

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1.5x scale

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.