Home / 764,615.94-1,055,174.10-420,474.06

Finding the Fourth Proportional to 764,615.94, 1,055,174.10 and 420,474.06

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Solution

The fourth proportional to 764,615.94, 1,055,174.10 and 420,474.06 is: 580,256.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,615.94 : 1,055,174.10 = 420,474.06 : x
  2. Step 2: Convert to fraction form
    764,615.94/1,055,174.10 = 420,474.06/x
  3. Step 3: Cross multiply
    764,615.94x = 1,055,174.10 × 420,474.06
  4. Step 4: Simplify right side
    764,615.94x = 443,673,337,833.85
  5. Step 5: Solve for x
    x = 443,673,337,833.85/764,615.94
  6. Step 6: Final answer
    x = 580,256.46

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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.