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Finding the Third Proportional to 665,945 and 1,438,297

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Solution

The third proportional to 665,945 and 1,438,297 is: 3,106,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,945 : 1,438,297 = 1,438,297 : x
  2. Step 2: Convert to fraction form
    665,945/1,438,297 = 1,438,297/x
  3. Step 3: Cross multiply
    665,945x = 1,438,297 × 1,438,297
  4. Step 4: Simplify right side
    665,945x = 2,068,698,260,209
  5. Step 5: Solve for x
    x = 2,068,698,260,209/665,945
  6. Step 6: Final answer
    x = 3,106,410.08

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.