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Finding the Fourth Proportional to 713,757.27, 984,989.93 and 391,469.68

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Solution

The fourth proportional to 713,757.27, 984,989.93 and 391,469.68 is: 540,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,757.27 : 984,989.93 = 391,469.68 : x
  2. Step 2: Convert to fraction form
    713,757.27/984,989.93 = 391,469.68/x
  3. Step 3: Cross multiply
    713,757.27x = 984,989.93 × 391,469.68
  4. Step 4: Simplify right side
    713,757.27x = 385,593,692,700.32
  5. Step 5: Solve for x
    x = 385,593,692,700.32/713,757.27
  6. Step 6: Final answer
    x = 540,230.84

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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.