Home / 685,494.92-1,028,285.94-212,140.52

Finding the Fourth Proportional to 685,494.92, 1,028,285.94 and 212,140.52

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Solution

The fourth proportional to 685,494.92, 1,028,285.94 and 212,140.52 is: 318,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,494.92 : 1,028,285.94 = 212,140.52 : x
  2. Step 2: Convert to fraction form
    685,494.92/1,028,285.94 = 212,140.52/x
  3. Step 3: Cross multiply
    685,494.92x = 1,028,285.94 × 212,140.52
  4. Step 4: Simplify right side
    685,494.92x = 218,141,114,020.29
  5. Step 5: Solve for x
    x = 218,141,114,020.29/685,494.92
  6. Step 6: Final answer
    x = 318,224.26

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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.