Home / 764,887.38-1,055,564.50-420,732.18

Finding the Fourth Proportional to 764,887.38, 1,055,564.50 and 420,732.18

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Solution

The fourth proportional to 764,887.38, 1,055,564.50 and 420,732.18 is: 580,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,887.38 : 1,055,564.50 = 420,732.18 : x
  2. Step 2: Convert to fraction form
    764,887.38/1,055,564.50 = 420,732.18/x
  3. Step 3: Cross multiply
    764,887.38x = 1,055,564.50 × 420,732.18
  4. Step 4: Simplify right side
    764,887.38x = 444,109,953,215.61
  5. Step 5: Solve for x
    x = 444,109,953,215.61/764,887.38
  6. Step 6: Final answer
    x = 580,621.36

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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.