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Finding the Fourth Proportional to 647,470.70, 970,914.45 and 247,978.70

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Solution

The fourth proportional to 647,470.70, 970,914.45 and 247,978.70 is: 371,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,470.70 : 970,914.45 = 247,978.70 : x
  2. Step 2: Convert to fraction form
    647,470.70/970,914.45 = 247,978.70/x
  3. Step 3: Cross multiply
    647,470.70x = 970,914.45 × 247,978.70
  4. Step 4: Simplify right side
    647,470.70x = 240,766,103,122.22
  5. Step 5: Solve for x
    x = 240,766,103,122.22/647,470.70
  6. Step 6: Final answer
    x = 371,856.37

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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.