Home / 2,661,126.40-3,991,689.60-978,011.20

Finding the Fourth Proportional to 2,661,126.40, 3,991,689.60 and 978,011.20

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Solution

The fourth proportional to 2,661,126.40, 3,991,689.60 and 978,011.20 is: 1,467,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,126.40 : 3,991,689.60 = 978,011.20 : x
  2. Step 2: Convert to fraction form
    2,661,126.40/3,991,689.60 = 978,011.20/x
  3. Step 3: Cross multiply
    2,661,126.40x = 3,991,689.60 × 978,011.20
  4. Step 4: Simplify right side
    2,661,126.40x = 3,903,917,135,723.52
  5. Step 5: Solve for x
    x = 3,903,917,135,723.52/2,661,126.40
  6. Step 6: Final answer
    x = 1,467,016.80

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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.