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Finding the Third Proportional to 5,477,982 and 8,515,999

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Solution

The third proportional to 5,477,982 and 8,515,999 is: 13,238,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477,982 : 8,515,999 = 8,515,999 : x
  2. Step 2: Convert to fraction form
    5,477,982/8,515,999 = 8,515,999/x
  3. Step 3: Cross multiply
    5,477,982x = 8,515,999 × 8,515,999
  4. Step 4: Simplify right side
    5,477,982x = 72,522,238,968,001
  5. Step 5: Solve for x
    x = 72,522,238,968,001/5,477,982
  6. Step 6: Final answer
    x = 13,238,860.40

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.