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Finding the Fourth Proportional to 978,185.80, 1,467,278.70 and 978,185.80

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Solution

The fourth proportional to 978,185.80, 1,467,278.70 and 978,185.80 is: 1,467,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,185.80 : 1,467,278.70 = 978,185.80 : x
  2. Step 2: Convert to fraction form
    978,185.80/1,467,278.70 = 978,185.80/x
  3. Step 3: Cross multiply
    978,185.80x = 1,467,278.70 × 978,185.80
  4. Step 4: Simplify right side
    978,185.80x = 1,435,271,188,982.46
  5. Step 5: Solve for x
    x = 1,435,271,188,982.46/978,185.80
  6. Step 6: Final answer
    x = 1,467,278.70

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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.