Home / 839,844.40-1,259,766.60-520,979.80

Finding the Fourth Proportional to 839,844.40, 1,259,766.60 and 520,979.80

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Solution

The fourth proportional to 839,844.40, 1,259,766.60 and 520,979.80 is: 781,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,844.40 : 1,259,766.60 = 520,979.80 : x
  2. Step 2: Convert to fraction form
    839,844.40/1,259,766.60 = 520,979.80/x
  3. Step 3: Cross multiply
    839,844.40x = 1,259,766.60 × 520,979.80
  4. Step 4: Simplify right side
    839,844.40x = 656,312,951,314.68
  5. Step 5: Solve for x
    x = 656,312,951,314.68/839,844.40
  6. Step 6: Final answer
    x = 781,469.70

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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.