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Finding the Third Proportional to 8,421,708 and 18,522,648

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Solution

The third proportional to 8,421,708 and 18,522,648 is: 40,738,587.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421,708 : 18,522,648 = 18,522,648 : x
  2. Step 2: Convert to fraction form
    8,421,708/18,522,648 = 18,522,648/x
  3. Step 3: Cross multiply
    8,421,708x = 18,522,648 × 18,522,648
  4. Step 4: Simplify right side
    8,421,708x = 343,088,488,931,904
  5. Step 5: Solve for x
    x = 343,088,488,931,904/8,421,708
  6. Step 6: Final answer
    x = 40,738,587.58

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.