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Finding the Fourth Proportional to 978,774.84, 1,467,919.26 and 268,767.72

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Solution

The fourth proportional to 978,774.84, 1,467,919.26 and 268,767.72 is: 403,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,774.84 : 1,467,919.26 = 268,767.72 : x
  2. Step 2: Convert to fraction form
    978,774.84/1,467,919.26 = 268,767.72/x
  3. Step 3: Cross multiply
    978,774.84x = 1,467,919.26 × 268,767.72
  4. Step 4: Simplify right side
    978,774.84x = 394,529,312,654.29
  5. Step 5: Solve for x
    x = 394,529,312,654.29/978,774.84
  6. Step 6: Final answer
    x = 403,084.85

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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.