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Finding the Fourth Proportional to 3,478,982.70, 5,218,474.05 and 3,478,982.70

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Solution

The fourth proportional to 3,478,982.70, 5,218,474.05 and 3,478,982.70 is: 5,218,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478,982.70 : 5,218,474.05 = 3,478,982.70 : x
  2. Step 2: Convert to fraction form
    3,478,982.70/5,218,474.05 = 3,478,982.70/x
  3. Step 3: Cross multiply
    3,478,982.70x = 5,218,474.05 × 3,478,982.70
  4. Step 4: Simplify right side
    3,478,982.70x = 18,154,980,940,348.93
  5. Step 5: Solve for x
    x = 18,154,980,940,348.93/3,478,982.70
  6. Step 6: Final answer
    x = 5,218,474.05

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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.