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Finding the Fourth Proportional to 451,481.12, 622,917.84 and 355,690.48

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Solution

The fourth proportional to 451,481.12, 622,917.84 and 355,690.48 is: 490,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,481.12 : 622,917.84 = 355,690.48 : x
  2. Step 2: Convert to fraction form
    451,481.12/622,917.84 = 355,690.48/x
  3. Step 3: Cross multiply
    451,481.12x = 622,917.84 × 355,690.48
  4. Step 4: Simplify right side
    451,481.12x = 221,565,945,510.16
  5. Step 5: Solve for x
    x = 221,565,945,510.16/451,481.12
  6. Step 6: Final answer
    x = 490,753.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.