Home / 764,519.70-1,055,014.74-420,356.07

Finding the Fourth Proportional to 764,519.70, 1,055,014.74 and 420,356.07

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Solution

The fourth proportional to 764,519.70, 1,055,014.74 and 420,356.07 is: 580,079.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,519.70 : 1,055,014.74 = 420,356.07 : x
  2. Step 2: Convert to fraction form
    764,519.70/1,055,014.74 = 420,356.07/x
  3. Step 3: Cross multiply
    764,519.70x = 1,055,014.74 × 420,356.07
  4. Step 4: Simplify right side
    764,519.70x = 443,481,849,898.47
  5. Step 5: Solve for x
    x = 443,481,849,898.47/764,519.70
  6. Step 6: Final answer
    x = 580,079.04

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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.