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Finding the Third Proportional to 291,913 and 627,477

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Solution

The third proportional to 291,913 and 627,477 is: 1,348,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,913 : 627,477 = 627,477 : x
  2. Step 2: Convert to fraction form
    291,913/627,477 = 627,477/x
  3. Step 3: Cross multiply
    291,913x = 627,477 × 627,477
  4. Step 4: Simplify right side
    291,913x = 393,727,385,529
  5. Step 5: Solve for x
    x = 393,727,385,529/291,913
  6. Step 6: Final answer
    x = 1,348,783.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.