Home / 764,754.37-1,055,338.73-420,589.94

Finding the Fourth Proportional to 764,754.37, 1,055,338.73 and 420,589.94

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Solution

The fourth proportional to 764,754.37, 1,055,338.73 and 420,589.94 is: 580,401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,754.37 : 1,055,338.73 = 420,589.94 : x
  2. Step 2: Convert to fraction form
    764,754.37/1,055,338.73 = 420,589.94/x
  3. Step 3: Cross multiply
    764,754.37x = 1,055,338.73 × 420,589.94
  4. Step 4: Simplify right side
    764,754.37x = 443,864,856,528.08
  5. Step 5: Solve for x
    x = 443,864,856,528.08/764,754.37
  6. Step 6: Final answer
    x = 580,401.85

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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.