Home / 764,535.42-1,055,085.96-420,397.56

Finding the Fourth Proportional to 764,535.42, 1,055,085.96 and 420,397.56

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Solution

The fourth proportional to 764,535.42, 1,055,085.96 and 420,397.56 is: 580,163.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,535.42 : 1,055,085.96 = 420,397.56 : x
  2. Step 2: Convert to fraction form
    764,535.42/1,055,085.96 = 420,397.56/x
  3. Step 3: Cross multiply
    764,535.42x = 1,055,085.96 × 420,397.56
  4. Step 4: Simplify right side
    764,535.42x = 443,555,563,174.26
  5. Step 5: Solve for x
    x = 443,555,563,174.26/764,535.42
  6. Step 6: Final answer
    x = 580,163.52

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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.