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Finding the Fourth Proportional to 654,957.79, 982,380.41 and 398,723.86

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Solution

The fourth proportional to 654,957.79, 982,380.41 and 398,723.86 is: 598,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,957.79 : 982,380.41 = 398,723.86 : x
  2. Step 2: Convert to fraction form
    654,957.79/982,380.41 = 398,723.86/x
  3. Step 3: Cross multiply
    654,957.79x = 982,380.41 × 398,723.86
  4. Step 4: Simplify right side
    654,957.79x = 391,698,504,614.01
  5. Step 5: Solve for x
    x = 391,698,504,614.01/654,957.79
  6. Step 6: Final answer
    x = 598,051.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.