Home / 1,990,979.60-2,986,469.40-729,712.40

Finding the Fourth Proportional to 1,990,979.60, 2,986,469.40 and 729,712.40

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Solution

The fourth proportional to 1,990,979.60, 2,986,469.40 and 729,712.40 is: 1,094,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,979.60 : 2,986,469.40 = 729,712.40 : x
  2. Step 2: Convert to fraction form
    1,990,979.60/2,986,469.40 = 729,712.40/x
  3. Step 3: Cross multiply
    1,990,979.60x = 2,986,469.40 × 729,712.40
  4. Step 4: Simplify right side
    1,990,979.60x = 2,179,263,753,400.56
  5. Step 5: Solve for x
    x = 2,179,263,753,400.56/1,990,979.60
  6. Step 6: Final answer
    x = 1,094,568.60

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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.