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Finding the Fourth Proportional to 654,397.70, 982,121.49 and 338,944.82

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Solution

The fourth proportional to 654,397.70, 982,121.49 and 338,944.82 is: 508,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,397.70 : 982,121.49 = 338,944.82 : x
  2. Step 2: Convert to fraction form
    654,397.70/982,121.49 = 338,944.82/x
  3. Step 3: Cross multiply
    654,397.70x = 982,121.49 × 338,944.82
  4. Step 4: Simplify right side
    654,397.70x = 332,884,986,735.57
  5. Step 5: Solve for x
    x = 332,884,986,735.57/654,397.70
  6. Step 6: Final answer
    x = 508,689.12

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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.