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Finding the Third Proportional to 427,254 and 664,209

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Solution

The third proportional to 427,254 and 664,209 is: 1,032,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,254 : 664,209 = 664,209 : x
  2. Step 2: Convert to fraction form
    427,254/664,209 = 664,209/x
  3. Step 3: Cross multiply
    427,254x = 664,209 × 664,209
  4. Step 4: Simplify right side
    427,254x = 441,173,595,681
  5. Step 5: Solve for x
    x = 441,173,595,681/427,254
  6. Step 6: Final answer
    x = 1,032,579.21

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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.