Home / 685,096.83-1,027,743.71-211,819.09

Finding the Fourth Proportional to 685,096.83, 1,027,743.71 and 211,819.09

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Solution

The fourth proportional to 685,096.83, 1,027,743.71 and 211,819.09 is: 317,759.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,096.83 : 1,027,743.71 = 211,819.09 : x
  2. Step 2: Convert to fraction form
    685,096.83/1,027,743.71 = 211,819.09/x
  3. Step 3: Cross multiply
    685,096.83x = 1,027,743.71 × 211,819.09
  4. Step 4: Simplify right side
    685,096.83x = 217,695,737,405.42
  5. Step 5: Solve for x
    x = 217,695,737,405.42/685,096.83
  6. Step 6: Final answer
    x = 317,759.08

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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.