Home / 814,789-1,222,216.62-388,105.48

Finding the Fourth Proportional to 814,789, 1,222,216.62 and 388,105.48

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Solution

The fourth proportional to 814,789, 1,222,216.62 and 388,105.48 is: 582,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,789 : 1,222,216.62 = 388,105.48 : x
  2. Step 2: Convert to fraction form
    814,789/1,222,216.62 = 388,105.48/x
  3. Step 3: Cross multiply
    814,789x = 1,222,216.62 × 388,105.48
  4. Step 4: Simplify right side
    814,789x = 474,348,967,969.08
  5. Step 5: Solve for x
    x = 474,348,967,969.08/814,789
  6. Step 6: Final answer
    x = 582,174.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.