Home / 814,788-1,222,215.12-388,104.48

Finding the Fourth Proportional to 814,788, 1,222,215.12 and 388,104.48

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Solution

The fourth proportional to 814,788, 1,222,215.12 and 388,104.48 is: 582,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,788 : 1,222,215.12 = 388,104.48 : x
  2. Step 2: Convert to fraction form
    814,788/1,222,215.12 = 388,104.48/x
  3. Step 3: Cross multiply
    814,788x = 1,222,215.12 × 388,104.48
  4. Step 4: Simplify right side
    814,788x = 474,347,163,595.74
  5. Step 5: Solve for x
    x = 474,347,163,595.74/814,788
  6. Step 6: Final answer
    x = 582,172.50

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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.