Home / 764,067.45-1,146,139.26-290,789.49

Finding the Fourth Proportional to 764,067.45, 1,146,139.26 and 290,789.49

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Solution

The fourth proportional to 764,067.45, 1,146,139.26 and 290,789.49 is: 436,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,067.45 : 1,146,139.26 = 290,789.49 : x
  2. Step 2: Convert to fraction form
    764,067.45/1,146,139.26 = 290,789.49/x
  3. Step 3: Cross multiply
    764,067.45x = 1,146,139.26 × 290,789.49
  4. Step 4: Simplify right side
    764,067.45x = 333,285,250,884.38
  5. Step 5: Solve for x
    x = 333,285,250,884.38/764,067.45
  6. Step 6: Final answer
    x = 436,198.73

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Double scale
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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.