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Finding the Third Proportional to 828,881 and 1,283,780

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Solution

The third proportional to 828,881 and 1,283,780 is: 1,988,332.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,881 : 1,283,780 = 1,283,780 : x
  2. Step 2: Convert to fraction form
    828,881/1,283,780 = 1,283,780/x
  3. Step 3: Cross multiply
    828,881x = 1,283,780 × 1,283,780
  4. Step 4: Simplify right side
    828,881x = 1,648,091,088,400
  5. Step 5: Solve for x
    x = 1,648,091,088,400/828,881
  6. Step 6: Final answer
    x = 1,988,332.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.