Home / 456,786.72-685,184.40-204,079.92

Finding the Fourth Proportional to 456,786.72, 685,184.40 and 204,079.92

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Solution

The fourth proportional to 456,786.72, 685,184.40 and 204,079.92 is: 306,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,786.72 : 685,184.40 = 204,079.92 : x
  2. Step 2: Convert to fraction form
    456,786.72/685,184.40 = 204,079.92/x
  3. Step 3: Cross multiply
    456,786.72x = 685,184.40 × 204,079.92
  4. Step 4: Simplify right side
    456,786.72x = 139,832,377,537.25
  5. Step 5: Solve for x
    x = 139,832,377,537.25/456,786.72
  6. Step 6: Final answer
    x = 306,121.81

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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.