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Finding the Fourth Proportional to 948,288, 1,422,432 and 247,872

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Solution

The fourth proportional to 948,288, 1,422,432 and 247,872 is: 371,808

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,288 : 1,422,432 = 247,872 : x
  2. Step 2: Convert to fraction form
    948,288/1,422,432 = 247,872/x
  3. Step 3: Cross multiply
    948,288x = 1,422,432 × 247,872
  4. Step 4: Simplify right side
    948,288x = 352,581,064,704
  5. Step 5: Solve for x
    x = 352,581,064,704/948,288
  6. Step 6: Final answer
    x = 371,808

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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.