Home / 818,589.88-1,121,473.55-787,908.80

Finding the Fourth Proportional to 818,589.88, 1,121,473.55 and 787,908.80

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Solution

The fourth proportional to 818,589.88, 1,121,473.55 and 787,908.80 is: 1,079,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,589.88 : 1,121,473.55 = 787,908.80 : x
  2. Step 2: Convert to fraction form
    818,589.88/1,121,473.55 = 787,908.80/x
  3. Step 3: Cross multiply
    818,589.88x = 1,121,473.55 × 787,908.80
  4. Step 4: Simplify right side
    818,589.88x = 883,618,883,785.70
  5. Step 5: Solve for x
    x = 883,618,883,785.70/818,589.88
  6. Step 6: Final answer
    x = 1,079,440.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.