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Finding the Third Proportional to 7,278,665 and 15,579,781

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Solution

The third proportional to 7,278,665 and 15,579,781 is: 33,348,090.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278,665 : 15,579,781 = 15,579,781 : x
  2. Step 2: Convert to fraction form
    7,278,665/15,579,781 = 15,579,781/x
  3. Step 3: Cross multiply
    7,278,665x = 15,579,781 × 15,579,781
  4. Step 4: Simplify right side
    7,278,665x = 242,729,576,007,961
  5. Step 5: Solve for x
    x = 242,729,576,007,961/7,278,665
  6. Step 6: Final answer
    x = 33,348,090.07

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.