Home / 764,536.42-1,055,087.34-420,398.56

Finding the Fourth Proportional to 764,536.42, 1,055,087.34 and 420,398.56

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Solution

The fourth proportional to 764,536.42, 1,055,087.34 and 420,398.56 is: 580,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,536.42 : 1,055,087.34 = 420,398.56 : x
  2. Step 2: Convert to fraction form
    764,536.42/1,055,087.34 = 420,398.56/x
  3. Step 3: Cross multiply
    764,536.42x = 1,055,087.34 × 420,398.56
  4. Step 4: Simplify right side
    764,536.42x = 443,557,198,410.23
  5. Step 5: Solve for x
    x = 443,557,198,410.23/764,536.42
  6. Step 6: Final answer
    x = 580,164.90

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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.