Home / 639,379.14-959,248.53-279,581.64

Finding the Fourth Proportional to 639,379.14, 959,248.53 and 279,581.64

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Solution

The fourth proportional to 639,379.14, 959,248.53 and 279,581.64 is: 419,451.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,379.14 : 959,248.53 = 279,581.64 : x
  2. Step 2: Convert to fraction form
    639,379.14/959,248.53 = 279,581.64/x
  3. Step 3: Cross multiply
    639,379.14x = 959,248.53 × 279,581.64
  4. Step 4: Simplify right side
    639,379.14x = 268,188,277,184.99
  5. Step 5: Solve for x
    x = 268,188,277,184.99/639,379.14
  6. Step 6: Final answer
    x = 419,451.09

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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.