Home / 685,072.12-1,027,706.28-211,794.16

Finding the Fourth Proportional to 685,072.12, 1,027,706.28 and 211,794.16

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Solution

The fourth proportional to 685,072.12, 1,027,706.28 and 211,794.16 is: 317,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,072.12 : 1,027,706.28 = 211,794.16 : x
  2. Step 2: Convert to fraction form
    685,072.12/1,027,706.28 = 211,794.16/x
  3. Step 3: Cross multiply
    685,072.12x = 1,027,706.28 × 211,794.16
  4. Step 4: Simplify right side
    685,072.12x = 217,662,188,299.33
  5. Step 5: Solve for x
    x = 217,662,188,299.33/685,072.12
  6. Step 6: Final answer
    x = 317,721.57

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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.