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Finding the Third Proportional to 3,879,641 and 8,430,808

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Solution

The third proportional to 3,879,641 and 8,430,808 is: 18,320,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879,641 : 8,430,808 = 8,430,808 : x
  2. Step 2: Convert to fraction form
    3,879,641/8,430,808 = 8,430,808/x
  3. Step 3: Cross multiply
    3,879,641x = 8,430,808 × 8,430,808
  4. Step 4: Simplify right side
    3,879,641x = 71,078,523,532,864
  5. Step 5: Solve for x
    x = 71,078,523,532,864/3,879,641
  6. Step 6: Final answer
    x = 18,320,902.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.