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Finding the Fourth Proportional to 647,167.79, 970,780.84 and 247,704.95

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Solution

The fourth proportional to 647,167.79, 970,780.84 and 247,704.95 is: 371,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,167.79 : 970,780.84 = 247,704.95 : x
  2. Step 2: Convert to fraction form
    647,167.79/970,780.84 = 247,704.95/x
  3. Step 3: Cross multiply
    647,167.79x = 970,780.84 × 247,704.95
  4. Step 4: Simplify right side
    647,167.79x = 240,467,213,959.99
  5. Step 5: Solve for x
    x = 240,467,213,959.99/647,167.79
  6. Step 6: Final answer
    x = 371,568.58

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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.