Home / 753,147.82-1,129,721.37-220,668.58

Finding the Fourth Proportional to 753,147.82, 1,129,721.37 and 220,668.58

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Solution

The fourth proportional to 753,147.82, 1,129,721.37 and 220,668.58 is: 331,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,147.82 : 1,129,721.37 = 220,668.58 : x
  2. Step 2: Convert to fraction form
    753,147.82/1,129,721.37 = 220,668.58/x
  3. Step 3: Cross multiply
    753,147.82x = 1,129,721.37 × 220,668.58
  4. Step 4: Simplify right side
    753,147.82x = 249,294,010,513.56
  5. Step 5: Solve for x
    x = 249,294,010,513.56/753,147.82
  6. Step 6: Final answer
    x = 331,002.76

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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.