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Finding the Fourth Proportional to 719,481.69, 992,892.78 and 397,191.96

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Solution

The fourth proportional to 719,481.69, 992,892.78 and 397,191.96 is: 548,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,481.69 : 992,892.78 = 397,191.96 : x
  2. Step 2: Convert to fraction form
    719,481.69/992,892.78 = 397,191.96/x
  3. Step 3: Cross multiply
    719,481.69x = 992,892.78 × 397,191.96
  4. Step 4: Simplify right side
    719,481.69x = 394,369,029,358.05
  5. Step 5: Solve for x
    x = 394,369,029,358.05/719,481.69
  6. Step 6: Final answer
    x = 548,129.35

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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.