Home / 842,831.28-1,263,983.40-281,734.56

Finding the Fourth Proportional to 842,831.28, 1,263,983.40 and 281,734.56

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Solution

The fourth proportional to 842,831.28, 1,263,983.40 and 281,734.56 is: 422,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,831.28 : 1,263,983.40 = 281,734.56 : x
  2. Step 2: Convert to fraction form
    842,831.28/1,263,983.40 = 281,734.56/x
  3. Step 3: Cross multiply
    842,831.28x = 1,263,983.40 × 281,734.56
  4. Step 4: Simplify right side
    842,831.28x = 356,107,807,046.30
  5. Step 5: Solve for x
    x = 356,107,807,046.30/842,831.28
  6. Step 6: Final answer
    x = 422,513.75

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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.