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Finding the Fourth Proportional to 861,724.16, 1,188,871.53 and 498,950

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Solution

The fourth proportional to 861,724.16, 1,188,871.53 and 498,950 is: 688,372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,724.16 : 1,188,871.53 = 498,950 : x
  2. Step 2: Convert to fraction form
    861,724.16/1,188,871.53 = 498,950/x
  3. Step 3: Cross multiply
    861,724.16x = 1,188,871.53 × 498,950
  4. Step 4: Simplify right side
    861,724.16x = 593,187,449,893.50
  5. Step 5: Solve for x
    x = 593,187,449,893.50/861,724.16
  6. Step 6: Final answer
    x = 688,372.77

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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.