Home / 819,135.78-1,229,257.26-286,661.49

Finding the Fourth Proportional to 819,135.78, 1,229,257.26 and 286,661.49

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Solution

The fourth proportional to 819,135.78, 1,229,257.26 and 286,661.49 is: 430,185.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,135.78 : 1,229,257.26 = 286,661.49 : x
  2. Step 2: Convert to fraction form
    819,135.78/1,229,257.26 = 286,661.49/x
  3. Step 3: Cross multiply
    819,135.78x = 1,229,257.26 × 286,661.49
  4. Step 4: Simplify right side
    819,135.78x = 352,380,717,744.92
  5. Step 5: Solve for x
    x = 352,380,717,744.92/819,135.78
  6. Step 6: Final answer
    x = 430,185.97

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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.