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Finding the Fourth Proportional to 835,470.76, 1,251,627.90 and 647,562.28

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Solution

The fourth proportional to 835,470.76, 1,251,627.90 and 647,562.28 is: 970,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,470.76 : 1,251,627.90 = 647,562.28 : x
  2. Step 2: Convert to fraction form
    835,470.76/1,251,627.90 = 647,562.28/x
  3. Step 3: Cross multiply
    835,470.76x = 1,251,627.90 × 647,562.28
  4. Step 4: Simplify right side
    835,470.76x = 810,507,016,635.61
  5. Step 5: Solve for x
    x = 810,507,016,635.61/835,470.76
  6. Step 6: Final answer
    x = 970,120.15

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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.