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Finding the Fourth Proportional to 455,067.20, 682,600.80 and 277,920.20

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Solution

The fourth proportional to 455,067.20, 682,600.80 and 277,920.20 is: 416,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,067.20 : 682,600.80 = 277,920.20 : x
  2. Step 2: Convert to fraction form
    455,067.20/682,600.80 = 277,920.20/x
  3. Step 3: Cross multiply
    455,067.20x = 682,600.80 × 277,920.20
  4. Step 4: Simplify right side
    455,067.20x = 189,708,550,856.16
  5. Step 5: Solve for x
    x = 189,708,550,856.16/455,067.20
  6. Step 6: Final answer
    x = 416,880.30

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Similar ratio
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1.5x scale

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.