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Finding the Fourth Proportional to 978,775.59, 1,467,920.39 and 268,768.47

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Solution

The fourth proportional to 978,775.59, 1,467,920.39 and 268,768.47 is: 403,085.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,775.59 : 1,467,920.39 = 268,768.47 : x
  2. Step 2: Convert to fraction form
    978,775.59/1,467,920.39 = 268,768.47/x
  3. Step 3: Cross multiply
    978,775.59x = 1,467,920.39 × 268,768.47
  4. Step 4: Simplify right side
    978,775.59x = 394,530,715,958.26
  5. Step 5: Solve for x
    x = 394,530,715,958.26/978,775.59
  6. Step 6: Final answer
    x = 403,085.98

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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.