Home / 778,147.36-1,073,843.04-420,451.36

Finding the Fourth Proportional to 778,147.36, 1,073,843.04 and 420,451.36

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Solution

The fourth proportional to 778,147.36, 1,073,843.04 and 420,451.36 is: 580,222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,147.36 : 1,073,843.04 = 420,451.36 : x
  2. Step 2: Convert to fraction form
    778,147.36/1,073,843.04 = 420,451.36/x
  3. Step 3: Cross multiply
    778,147.36x = 1,073,843.04 × 420,451.36
  4. Step 4: Simplify right side
    778,147.36x = 451,498,766,594.53
  5. Step 5: Solve for x
    x = 451,498,766,594.53/778,147.36
  6. Step 6: Final answer
    x = 580,222.71

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.