Home / 1,361,128.48-2,042,121.82-641,441.11

Finding the Fourth Proportional to 1,361,128.48, 2,042,121.82 and 641,441.11

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Solution

The fourth proportional to 1,361,128.48, 2,042,121.82 and 641,441.11 is: 962,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,128.48 : 2,042,121.82 = 641,441.11 : x
  2. Step 2: Convert to fraction form
    1,361,128.48/2,042,121.82 = 641,441.11/x
  3. Step 3: Cross multiply
    1,361,128.48x = 2,042,121.82 × 641,441.11
  4. Step 4: Simplify right side
    1,361,128.48x = 1,309,900,886,976.02
  5. Step 5: Solve for x
    x = 1,309,900,886,976.02/1,361,128.48
  6. Step 6: Final answer
    x = 962,363.88

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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.