Home / 1,321,128.96-1,981,186.32-562,489.44

Finding the Fourth Proportional to 1,321,128.96, 1,981,186.32 and 562,489.44

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Solution

The fourth proportional to 1,321,128.96, 1,981,186.32 and 562,489.44 is: 843,518.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,128.96 : 1,981,186.32 = 562,489.44 : x
  2. Step 2: Convert to fraction form
    1,321,128.96/1,981,186.32 = 562,489.44/x
  3. Step 3: Cross multiply
    1,321,128.96x = 1,981,186.32 × 562,489.44
  4. Step 4: Simplify right side
    1,321,128.96x = 1,114,396,383,672.46
  5. Step 5: Solve for x
    x = 1,114,396,383,672.46/1,321,128.96
  6. Step 6: Final answer
    x = 843,518.25

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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.