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Finding the Fourth Proportional to 978,788.80, 1,467,016.80 and 410,168.80

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Solution

The fourth proportional to 978,788.80, 1,467,016.80 and 410,168.80 is: 614,764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,788.80 : 1,467,016.80 = 410,168.80 : x
  2. Step 2: Convert to fraction form
    978,788.80/1,467,016.80 = 410,168.80/x
  3. Step 3: Cross multiply
    978,788.80x = 1,467,016.80 × 410,168.80
  4. Step 4: Simplify right side
    978,788.80x = 601,724,520,435.84
  5. Step 5: Solve for x
    x = 601,724,520,435.84/978,788.80
  6. Step 6: Final answer
    x = 614,764.41

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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.