Home / 764,563.30-1,055,005.50-420,342.46

Finding the Fourth Proportional to 764,563.30, 1,055,005.50 and 420,342.46

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Solution

The fourth proportional to 764,563.30, 1,055,005.50 and 420,342.46 is: 580,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,563.30 : 1,055,005.50 = 420,342.46 : x
  2. Step 2: Convert to fraction form
    764,563.30/1,055,005.50 = 420,342.46/x
  3. Step 3: Cross multiply
    764,563.30x = 1,055,005.50 × 420,342.46
  4. Step 4: Simplify right side
    764,563.30x = 443,463,607,183.53
  5. Step 5: Solve for x
    x = 443,463,607,183.53/764,563.30
  6. Step 6: Final answer
    x = 580,022.10

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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.