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Finding the Third Proportional to 4,368,978 and 9,289,080

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Solution

The third proportional to 4,368,978 and 9,289,080 is: 19,749,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,368,978 : 9,289,080 = 9,289,080 : x
  2. Step 2: Convert to fraction form
    4,368,978/9,289,080 = 9,289,080/x
  3. Step 3: Cross multiply
    4,368,978x = 9,289,080 × 9,289,080
  4. Step 4: Simplify right side
    4,368,978x = 86,287,007,246,400
  5. Step 5: Solve for x
    x = 86,287,007,246,400/4,368,978
  6. Step 6: Final answer
    x = 19,749,929.44

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.