Home / 839,149.20-1,258,723.80-724,987.80

Finding the Fourth Proportional to 839,149.20, 1,258,723.80 and 724,987.80

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Solution

The fourth proportional to 839,149.20, 1,258,723.80 and 724,987.80 is: 1,087,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,149.20 : 1,258,723.80 = 724,987.80 : x
  2. Step 2: Convert to fraction form
    839,149.20/1,258,723.80 = 724,987.80/x
  3. Step 3: Cross multiply
    839,149.20x = 1,258,723.80 × 724,987.80
  4. Step 4: Simplify right side
    839,149.20x = 912,559,398,569.64
  5. Step 5: Solve for x
    x = 912,559,398,569.64/839,149.20
  6. Step 6: Final answer
    x = 1,087,481.70

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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.