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Finding the Third Proportional to 279,110 and 611,428

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Solution

The third proportional to 279,110 and 611,428 is: 1,339,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,110 : 611,428 = 611,428 : x
  2. Step 2: Convert to fraction form
    279,110/611,428 = 611,428/x
  3. Step 3: Cross multiply
    279,110x = 611,428 × 611,428
  4. Step 4: Simplify right side
    279,110x = 373,844,199,184
  5. Step 5: Solve for x
    x = 373,844,199,184/279,110
  6. Step 6: Final answer
    x = 1,339,415.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.