Home / 858,909.20-1,288,363.80-839,226.20

Finding the Fourth Proportional to 858,909.20, 1,288,363.80 and 839,226.20

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Solution

The fourth proportional to 858,909.20, 1,288,363.80 and 839,226.20 is: 1,258,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,909.20 : 1,288,363.80 = 839,226.20 : x
  2. Step 2: Convert to fraction form
    858,909.20/1,288,363.80 = 839,226.20/x
  3. Step 3: Cross multiply
    858,909.20x = 1,288,363.80 × 839,226.20
  4. Step 4: Simplify right side
    858,909.20x = 1,081,228,656,091.56
  5. Step 5: Solve for x
    x = 1,081,228,656,091.56/858,909.20
  6. Step 6: Final answer
    x = 1,258,839.30

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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.