Home / 2,661,622.40-3,992,433.60-978,507.20

Finding the Fourth Proportional to 2,661,622.40, 3,992,433.60 and 978,507.20

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Solution

The fourth proportional to 2,661,622.40, 3,992,433.60 and 978,507.20 is: 1,467,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,622.40 : 3,992,433.60 = 978,507.20 : x
  2. Step 2: Convert to fraction form
    2,661,622.40/3,992,433.60 = 978,507.20/x
  3. Step 3: Cross multiply
    2,661,622.40x = 3,992,433.60 × 978,507.20
  4. Step 4: Simplify right side
    2,661,622.40x = 3,906,625,023,121.92
  5. Step 5: Solve for x
    x = 3,906,625,023,121.92/2,661,622.40
  6. Step 6: Final answer
    x = 1,467,760.80

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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.