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Finding the Fourth Proportional to 624,371.90, 861,657.89 and 352,449.50

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Solution

The fourth proportional to 624,371.90, 861,657.89 and 352,449.50 is: 486,394.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,371.90 : 861,657.89 = 352,449.50 : x
  2. Step 2: Convert to fraction form
    624,371.90/861,657.89 = 352,449.50/x
  3. Step 3: Cross multiply
    624,371.90x = 861,657.89 × 352,449.50
  4. Step 4: Simplify right side
    624,371.90x = 303,690,886,431.02
  5. Step 5: Solve for x
    x = 303,690,886,431.02/624,371.90
  6. Step 6: Final answer
    x = 486,394.23

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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.