Home / 841,447.20-1,262,138.40-280,481.70

Finding the Fourth Proportional to 841,447.20, 1,262,138.40 and 280,481.70

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Solution

The fourth proportional to 841,447.20, 1,262,138.40 and 280,481.70 is: 420,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,447.20 : 1,262,138.40 = 280,481.70 : x
  2. Step 2: Convert to fraction form
    841,447.20/1,262,138.40 = 280,481.70/x
  3. Step 3: Cross multiply
    841,447.20x = 1,262,138.40 × 280,481.70
  4. Step 4: Simplify right side
    841,447.20x = 354,006,724,067.28
  5. Step 5: Solve for x
    x = 354,006,724,067.28/841,447.20
  6. Step 6: Final answer
    x = 420,711.75

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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.