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Finding the Fourth Proportional to 987,372, 1,481,062.86 and 239,418

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Solution

The fourth proportional to 987,372, 1,481,062.86 and 239,418 is: 359,128.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,372 : 1,481,062.86 = 239,418 : x
  2. Step 2: Convert to fraction form
    987,372/1,481,062.86 = 239,418/x
  3. Step 3: Cross multiply
    987,372x = 1,481,062.86 × 239,418
  4. Step 4: Simplify right side
    987,372x = 354,593,107,815.48
  5. Step 5: Solve for x
    x = 354,593,107,815.48/987,372
  6. Step 6: Final answer
    x = 359,128.18

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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.