Home / 815,919.83-1,223,879.52-254,954.33

Finding the Fourth Proportional to 815,919.83, 1,223,879.52 and 254,954.33

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Solution

The fourth proportional to 815,919.83, 1,223,879.52 and 254,954.33 is: 382,431.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,919.83 : 1,223,879.52 = 254,954.33 : x
  2. Step 2: Convert to fraction form
    815,919.83/1,223,879.52 = 254,954.33/x
  3. Step 3: Cross multiply
    815,919.83x = 1,223,879.52 × 254,954.33
  4. Step 4: Simplify right side
    815,919.83x = 312,033,389,332.87
  5. Step 5: Solve for x
    x = 312,033,389,332.87/815,919.83
  6. Step 6: Final answer
    x = 382,431.43

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Double scale
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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.