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Finding the Fourth Proportional to 800,661.36, 1,200,992.84 and 327,346.72

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Solution

The fourth proportional to 800,661.36, 1,200,992.84 and 327,346.72 is: 491,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,661.36 : 1,200,992.84 = 327,346.72 : x
  2. Step 2: Convert to fraction form
    800,661.36/1,200,992.84 = 327,346.72/x
  3. Step 3: Cross multiply
    800,661.36x = 1,200,992.84 × 327,346.72
  4. Step 4: Simplify right side
    800,661.36x = 393,141,066,917.49
  5. Step 5: Solve for x
    x = 393,141,066,917.49/800,661.36
  6. Step 6: Final answer
    x = 491,020.41

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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.