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Finding the Third Proportional to 4,221,396 and 9,099,621

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Solution

The third proportional to 4,221,396 and 9,099,621 is: 19,615,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221,396 : 9,099,621 = 9,099,621 : x
  2. Step 2: Convert to fraction form
    4,221,396/9,099,621 = 9,099,621/x
  3. Step 3: Cross multiply
    4,221,396x = 9,099,621 × 9,099,621
  4. Step 4: Simplify right side
    4,221,396x = 82,803,102,343,641
  5. Step 5: Solve for x
    x = 82,803,102,343,641/4,221,396
  6. Step 6: Final answer
    x = 19,615,099.45

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.