Home / 685,231.78-1,027,876.48-211,926.10

Finding the Fourth Proportional to 685,231.78, 1,027,876.48 and 211,926.10

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Solution

The fourth proportional to 685,231.78, 1,027,876.48 and 211,926.10 is: 317,898.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,231.78 : 1,027,876.48 = 211,926.10 : x
  2. Step 2: Convert to fraction form
    685,231.78/1,027,876.48 = 211,926.10/x
  3. Step 3: Cross multiply
    685,231.78x = 1,027,876.48 × 211,926.10
  4. Step 4: Simplify right side
    685,231.78x = 217,833,853,688.13
  5. Step 5: Solve for x
    x = 217,833,853,688.13/685,231.78
  6. Step 6: Final answer
    x = 317,898.06

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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.