Home / 420,738.94-631,103.86-336,102.04

Finding the Fourth Proportional to 420,738.94, 631,103.86 and 336,102.04

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Solution

The fourth proportional to 420,738.94, 631,103.86 and 336,102.04 is: 504,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,738.94 : 631,103.86 = 336,102.04 : x
  2. Step 2: Convert to fraction form
    420,738.94/631,103.86 = 336,102.04/x
  3. Step 3: Cross multiply
    420,738.94x = 631,103.86 × 336,102.04
  4. Step 4: Simplify right side
    420,738.94x = 212,115,294,116.31
  5. Step 5: Solve for x
    x = 212,115,294,116.31/420,738.94
  6. Step 6: Final answer
    x = 504,149.42

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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.