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Finding the Third Proportional to 778,518 and 1,689,957

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Solution

The third proportional to 778,518 and 1,689,957 is: 3,668,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,518 : 1,689,957 = 1,689,957 : x
  2. Step 2: Convert to fraction form
    778,518/1,689,957 = 1,689,957/x
  3. Step 3: Cross multiply
    778,518x = 1,689,957 × 1,689,957
  4. Step 4: Simplify right side
    778,518x = 2,855,954,661,849
  5. Step 5: Solve for x
    x = 2,855,954,661,849/778,518
  6. Step 6: Final answer
    x = 3,668,450.39

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.