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Finding the Third Proportional to 655,263 and 988,908.75

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Solution

The third proportional to 655,263 and 988,908.75 is: 1,492,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,263 : 988,908.75 = 988,908.75 : x
  2. Step 2: Convert to fraction form
    655,263/988,908.75 = 988,908.75/x
  3. Step 3: Cross multiply
    655,263x = 988,908.75 × 988,908.75
  4. Step 4: Simplify right side
    655,263x = 977,940,515,826.56
  5. Step 5: Solve for x
    x = 977,940,515,826.56/655,263
  6. Step 6: Final answer
    x = 1,492,439.70

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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.