Home / 685,930.26-1,028,948.60-206,120.58

Finding the Fourth Proportional to 685,930.26, 1,028,948.60 and 206,120.58

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Solution

The fourth proportional to 685,930.26, 1,028,948.60 and 206,120.58 is: 309,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,930.26 : 1,028,948.60 = 206,120.58 : x
  2. Step 2: Convert to fraction form
    685,930.26/1,028,948.60 = 206,120.58/x
  3. Step 3: Cross multiply
    685,930.26x = 1,028,948.60 × 206,120.58
  4. Step 4: Simplify right side
    685,930.26x = 212,087,481,191.59
  5. Step 5: Solve for x
    x = 212,087,481,191.59/685,930.26
  6. Step 6: Final answer
    x = 309,196.86

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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.