Home / 764,757.88-1,055,343.55-420,593.45

Finding the Fourth Proportional to 764,757.88, 1,055,343.55 and 420,593.45

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Solution

The fourth proportional to 764,757.88, 1,055,343.55 and 420,593.45 is: 580,406.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,757.88 : 1,055,343.55 = 420,593.45 : x
  2. Step 2: Convert to fraction form
    764,757.88/1,055,343.55 = 420,593.45/x
  3. Step 3: Cross multiply
    764,757.88x = 1,055,343.55 × 420,593.45
  4. Step 4: Simplify right side
    764,757.88x = 443,870,584,629.75
  5. Step 5: Solve for x
    x = 443,870,584,629.75/764,757.88
  6. Step 6: Final answer
    x = 580,406.68

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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.