Home / 764,715.99-1,055,320.29-420,566.97

Finding the Fourth Proportional to 764,715.99, 1,055,320.29 and 420,566.97

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Solution

The fourth proportional to 764,715.99, 1,055,320.29 and 420,566.97 is: 580,389.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,715.99 : 1,055,320.29 = 420,566.97 : x
  2. Step 2: Convert to fraction form
    764,715.99/1,055,320.29 = 420,566.97/x
  3. Step 3: Cross multiply
    764,715.99x = 1,055,320.29 × 420,566.97
  4. Step 4: Simplify right side
    764,715.99x = 443,832,856,744.82
  5. Step 5: Solve for x
    x = 443,832,856,744.82/764,715.99
  6. Step 6: Final answer
    x = 580,389.14

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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.