Home / 439,126.56-659,571.60-261,979.68

Finding the Fourth Proportional to 439,126.56, 659,571.60 and 261,979.68

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Solution

The fourth proportional to 439,126.56, 659,571.60 and 261,979.68 is: 393,495.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,126.56 : 659,571.60 = 261,979.68 : x
  2. Step 2: Convert to fraction form
    439,126.56/659,571.60 = 261,979.68/x
  3. Step 3: Cross multiply
    439,126.56x = 659,571.60 × 261,979.68
  4. Step 4: Simplify right side
    439,126.56x = 172,794,356,705.09
  5. Step 5: Solve for x
    x = 172,794,356,705.09/439,126.56
  6. Step 6: Final answer
    x = 393,495.57

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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.