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Finding the Fourth Proportional to 624,324.60, 861,607 and 352,438.56

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Solution

The fourth proportional to 624,324.60, 861,607 and 352,438.56 is: 486,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,324.60 : 861,607 = 352,438.56 : x
  2. Step 2: Convert to fraction form
    624,324.60/861,607 = 352,438.56/x
  3. Step 3: Cross multiply
    624,324.60x = 861,607 × 352,438.56
  4. Step 4: Simplify right side
    624,324.60x = 303,663,530,365.92
  5. Step 5: Solve for x
    x = 303,663,530,365.92/624,324.60
  6. Step 6: Final answer
    x = 486,387.26

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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.