Home / 819,771.39-1,229,564.75-220,776.39

Finding the Fourth Proportional to 819,771.39, 1,229,564.75 and 220,776.39

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Solution

The fourth proportional to 819,771.39, 1,229,564.75 and 220,776.39 is: 331,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,771.39 : 1,229,564.75 = 220,776.39 : x
  2. Step 2: Convert to fraction form
    819,771.39/1,229,564.75 = 220,776.39/x
  3. Step 3: Cross multiply
    819,771.39x = 1,229,564.75 × 220,776.39
  4. Step 4: Simplify right side
    819,771.39x = 271,458,865,672.37
  5. Step 5: Solve for x
    x = 271,458,865,672.37/819,771.39
  6. Step 6: Final answer
    x = 331,139.72

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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.