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Finding the Third Proportional to 5,515,424 and 8,561,840

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Solution

The third proportional to 5,515,424 and 8,561,840 is: 13,290,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515,424 : 8,561,840 = 8,561,840 : x
  2. Step 2: Convert to fraction form
    5,515,424/8,561,840 = 8,561,840/x
  3. Step 3: Cross multiply
    5,515,424x = 8,561,840 × 8,561,840
  4. Step 4: Simplify right side
    5,515,424x = 73,305,104,185,600
  5. Step 5: Solve for x
    x = 73,305,104,185,600/5,515,424
  6. Step 6: Final answer
    x = 13,290,928.17

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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.