Home / 764,700.50-1,055,313.79-420,563.04

Finding the Fourth Proportional to 764,700.50, 1,055,313.79 and 420,563.04

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Solution

The fourth proportional to 764,700.50, 1,055,313.79 and 420,563.04 is: 580,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,700.50 : 1,055,313.79 = 420,563.04 : x
  2. Step 2: Convert to fraction form
    764,700.50/1,055,313.79 = 420,563.04/x
  3. Step 3: Cross multiply
    764,700.50x = 1,055,313.79 × 420,563.04
  4. Step 4: Simplify right side
    764,700.50x = 443,825,972,737.46
  5. Step 5: Solve for x
    x = 443,825,972,737.46/764,700.50
  6. Step 6: Final answer
    x = 580,391.89

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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.