Home / 426,968.46-640,563.57-127,449.09

Finding the Fourth Proportional to 426,968.46, 640,563.57 and 127,449.09

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Solution

The fourth proportional to 426,968.46, 640,563.57 and 127,449.09 is: 191,206.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,968.46 : 640,563.57 = 127,449.09 : x
  2. Step 2: Convert to fraction form
    426,968.46/640,563.57 = 127,449.09/x
  3. Step 3: Cross multiply
    426,968.46x = 640,563.57 × 127,449.09
  4. Step 4: Simplify right side
    426,968.46x = 81,639,244,083.65
  5. Step 5: Solve for x
    x = 81,639,244,083.65/426,968.46
  6. Step 6: Final answer
    x = 191,206.73

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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.