Home / 420,076.44-629,929.17-120,489.03

Finding the Fourth Proportional to 420,076.44, 629,929.17 and 120,489.03

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Solution

The fourth proportional to 420,076.44, 629,929.17 and 120,489.03 is: 180,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,076.44 : 629,929.17 = 120,489.03 : x
  2. Step 2: Convert to fraction form
    420,076.44/629,929.17 = 120,489.03/x
  3. Step 3: Cross multiply
    420,076.44x = 629,929.17 × 120,489.03
  4. Step 4: Simplify right side
    420,076.44x = 75,899,554,662.01
  5. Step 5: Solve for x
    x = 75,899,554,662.01/420,076.44
  6. Step 6: Final answer
    x = 180,680.34

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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.