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Finding the Third Proportional to 5,538,904.50 and 8,128,638

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Solution

The third proportional to 5,538,904.50 and 8,128,638 is: 11,929,210.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538,904.50 : 8,128,638 = 8,128,638 : x
  2. Step 2: Convert to fraction form
    5,538,904.50/8,128,638 = 8,128,638/x
  3. Step 3: Cross multiply
    5,538,904.50x = 8,128,638 × 8,128,638
  4. Step 4: Simplify right side
    5,538,904.50x = 66,074,755,735,044
  5. Step 5: Solve for x
    x = 66,074,755,735,044/5,538,904.50
  6. Step 6: Final answer
    x = 11,929,210.14

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.