Home / 764,982.33-1,055,669.78-420,810.85

Finding the Fourth Proportional to 764,982.33, 1,055,669.78 and 420,810.85

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Solution

The fourth proportional to 764,982.33, 1,055,669.78 and 420,810.85 is: 580,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,982.33 : 1,055,669.78 = 420,810.85 : x
  2. Step 2: Convert to fraction form
    764,982.33/1,055,669.78 = 420,810.85/x
  3. Step 3: Cross multiply
    764,982.33x = 1,055,669.78 × 420,810.85
  4. Step 4: Simplify right side
    764,982.33x = 444,237,291,378.30
  5. Step 5: Solve for x
    x = 444,237,291,378.30/764,982.33
  6. Step 6: Final answer
    x = 580,715.76

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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.