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Finding the Fourth Proportional to 987,288, 1,480,932 and 239,334

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Solution

The fourth proportional to 987,288, 1,480,932 and 239,334 is: 359,001

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,288 : 1,480,932 = 239,334 : x
  2. Step 2: Convert to fraction form
    987,288/1,480,932 = 239,334/x
  3. Step 3: Cross multiply
    987,288x = 1,480,932 × 239,334
  4. Step 4: Simplify right side
    987,288x = 354,437,379,288
  5. Step 5: Solve for x
    x = 354,437,379,288/987,288
  6. Step 6: Final answer
    x = 359,001

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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.