Home / 764,612.94-1,055,169.96-420,471.06

Finding the Fourth Proportional to 764,612.94, 1,055,169.96 and 420,471.06

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Solution

The fourth proportional to 764,612.94, 1,055,169.96 and 420,471.06 is: 580,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,612.94 : 1,055,169.96 = 420,471.06 : x
  2. Step 2: Convert to fraction form
    764,612.94/1,055,169.96 = 420,471.06/x
  3. Step 3: Cross multiply
    764,612.94x = 1,055,169.96 × 420,471.06
  4. Step 4: Simplify right side
    764,612.94x = 443,668,431,561.36
  5. Step 5: Solve for x
    x = 443,668,431,561.36/764,612.94
  6. Step 6: Final answer
    x = 580,252.32

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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.