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Finding the Third Proportional to 276,588 and 417,426

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Solution

The third proportional to 276,588 and 417,426 is: 629,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,588 : 417,426 = 417,426 : x
  2. Step 2: Convert to fraction form
    276,588/417,426 = 417,426/x
  3. Step 3: Cross multiply
    276,588x = 417,426 × 417,426
  4. Step 4: Simplify right side
    276,588x = 174,244,465,476
  5. Step 5: Solve for x
    x = 174,244,465,476/276,588
  6. Step 6: Final answer
    x = 629,978.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.