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Finding the Third Proportional to 7,881,378 and 16,978,566

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Solution

The third proportional to 7,881,378 and 16,978,566 is: 36,576,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,378 : 16,978,566 = 16,978,566 : x
  2. Step 2: Convert to fraction form
    7,881,378/16,978,566 = 16,978,566/x
  3. Step 3: Cross multiply
    7,881,378x = 16,978,566 × 16,978,566
  4. Step 4: Simplify right side
    7,881,378x = 288,271,703,416,356
  5. Step 5: Solve for x
    x = 288,271,703,416,356/7,881,378
  6. Step 6: Final answer
    x = 36,576,307.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.