Home / 819,765.77-1,229,556.31-220,770.77

Finding the Fourth Proportional to 819,765.77, 1,229,556.31 and 220,770.77

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Solution

The fourth proportional to 819,765.77, 1,229,556.31 and 220,770.77 is: 331,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,765.77 : 1,229,556.31 = 220,770.77 : x
  2. Step 2: Convert to fraction form
    819,765.77/1,229,556.31 = 220,770.77/x
  3. Step 3: Cross multiply
    819,765.77x = 1,229,556.31 × 220,770.77
  4. Step 4: Simplify right side
    819,765.77x = 271,450,086,617.35
  5. Step 5: Solve for x
    x = 271,450,086,617.35/819,765.77
  6. Step 6: Final answer
    x = 331,131.28

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1.5x scale

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.