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Finding the Third Proportional to 855,633 and 1,821,378

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Solution

The third proportional to 855,633 and 1,821,378 is: 3,877,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,633 : 1,821,378 = 1,821,378 : x
  2. Step 2: Convert to fraction form
    855,633/1,821,378 = 1,821,378/x
  3. Step 3: Cross multiply
    855,633x = 1,821,378 × 1,821,378
  4. Step 4: Simplify right side
    855,633x = 3,317,417,818,884
  5. Step 5: Solve for x
    x = 3,317,417,818,884/855,633
  6. Step 6: Final answer
    x = 3,877,150.39

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.