Home / 445,145.60-667,519.32-319,961.36

Finding the Fourth Proportional to 445,145.60, 667,519.32 and 319,961.36

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Solution

The fourth proportional to 445,145.60, 667,519.32 and 319,961.36 is: 479,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,145.60 : 667,519.32 = 319,961.36 : x
  2. Step 2: Convert to fraction form
    445,145.60/667,519.32 = 319,961.36/x
  3. Step 3: Cross multiply
    445,145.60x = 667,519.32 × 319,961.36
  4. Step 4: Simplify right side
    445,145.60x = 213,580,389,453.48
  5. Step 5: Solve for x
    x = 213,580,389,453.48/445,145.60
  6. Step 6: Final answer
    x = 479,798.95

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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.