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Finding the Third Proportional to 1,638,985 and 3,603,203

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Solution

The third proportional to 1,638,985 and 3,603,203 is: 7,921,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,985 : 3,603,203 = 3,603,203 : x
  2. Step 2: Convert to fraction form
    1,638,985/3,603,203 = 3,603,203/x
  3. Step 3: Cross multiply
    1,638,985x = 3,603,203 × 3,603,203
  4. Step 4: Simplify right side
    1,638,985x = 12,983,071,859,209
  5. Step 5: Solve for x
    x = 12,983,071,859,209/1,638,985
  6. Step 6: Final answer
    x = 7,921,409.81

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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.