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Finding the Fourth Proportional to 481,920.56, 665,067.60 and 290,896.64

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Solution

The fourth proportional to 481,920.56, 665,067.60 and 290,896.64 is: 401,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,920.56 : 665,067.60 = 290,896.64 : x
  2. Step 2: Convert to fraction form
    481,920.56/665,067.60 = 290,896.64/x
  3. Step 3: Cross multiply
    481,920.56x = 665,067.60 × 290,896.64
  4. Step 4: Simplify right side
    481,920.56x = 193,465,930,212.86
  5. Step 5: Solve for x
    x = 193,465,930,212.86/481,920.56
  6. Step 6: Final answer
    x = 401,447.76

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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.