Home / 814,988.19-1,221,983.63-388,654.41

Finding the Fourth Proportional to 814,988.19, 1,221,983.63 and 388,654.41

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Solution

The fourth proportional to 814,988.19, 1,221,983.63 and 388,654.41 is: 582,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,988.19 : 1,221,983.63 = 388,654.41 : x
  2. Step 2: Convert to fraction form
    814,988.19/1,221,983.63 = 388,654.41/x
  3. Step 3: Cross multiply
    814,988.19x = 1,221,983.63 × 388,654.41
  4. Step 4: Simplify right side
    814,988.19x = 474,929,326,747.31
  5. Step 5: Solve for x
    x = 474,929,326,747.31/814,988.19
  6. Step 6: Final answer
    x = 582,743.81

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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.