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Finding the Third Proportional to 280,908 and 619,076

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Solution

The third proportional to 280,908 and 619,076 is: 1,364,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908 : 619,076 = 619,076 : x
  2. Step 2: Convert to fraction form
    280,908/619,076 = 619,076/x
  3. Step 3: Cross multiply
    280,908x = 619,076 × 619,076
  4. Step 4: Simplify right side
    280,908x = 383,255,093,776
  5. Step 5: Solve for x
    x = 383,255,093,776/280,908
  6. Step 6: Final answer
    x = 1,364,343.82

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.