Home / 685,086.65-1,027,728.44-211,808.91

Finding the Fourth Proportional to 685,086.65, 1,027,728.44 and 211,808.91

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Solution

The fourth proportional to 685,086.65, 1,027,728.44 and 211,808.91 is: 317,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,086.65 : 1,027,728.44 = 211,808.91 : x
  2. Step 2: Convert to fraction form
    685,086.65/1,027,728.44 = 211,808.91/x
  3. Step 3: Cross multiply
    685,086.65x = 1,027,728.44 × 211,808.91
  4. Step 4: Simplify right side
    685,086.65x = 217,682,039,593.36
  5. Step 5: Solve for x
    x = 217,682,039,593.36/685,086.65
  6. Step 6: Final answer
    x = 317,743.81

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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.