Home / 2,661,378.40-3,992,067.60-978,263.20

Finding the Fourth Proportional to 2,661,378.40, 3,992,067.60 and 978,263.20

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Solution

The fourth proportional to 2,661,378.40, 3,992,067.60 and 978,263.20 is: 1,467,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,378.40 : 3,992,067.60 = 978,263.20 : x
  2. Step 2: Convert to fraction form
    2,661,378.40/3,992,067.60 = 978,263.20/x
  3. Step 3: Cross multiply
    2,661,378.40x = 3,992,067.60 × 978,263.20
  4. Step 4: Simplify right side
    2,661,378.40x = 3,905,292,824,992.32
  5. Step 5: Solve for x
    x = 3,905,292,824,992.32/2,661,378.40
  6. Step 6: Final answer
    x = 1,467,394.80

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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.