Home / 1,990,831.60-2,747,229.20-1,131,272.56

Finding the Fourth Proportional to 1,990,831.60, 2,747,229.20 and 1,131,272.56

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Solution

The fourth proportional to 1,990,831.60, 2,747,229.20 and 1,131,272.56 is: 1,561,088.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,831.60 : 2,747,229.20 = 1,131,272.56 : x
  2. Step 2: Convert to fraction form
    1,990,831.60/2,747,229.20 = 1,131,272.56/x
  3. Step 3: Cross multiply
    1,990,831.60x = 2,747,229.20 × 1,131,272.56
  4. Step 4: Simplify right side
    1,990,831.60x = 3,107,865,009,990.75
  5. Step 5: Solve for x
    x = 3,107,865,009,990.75/1,990,831.60
  6. Step 6: Final answer
    x = 1,561,088.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.