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Finding the Third Proportional to 555,990 and 1,211,772

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Solution

The third proportional to 555,990 and 1,211,772 is: 2,641,039.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,990 : 1,211,772 = 1,211,772 : x
  2. Step 2: Convert to fraction form
    555,990/1,211,772 = 1,211,772/x
  3. Step 3: Cross multiply
    555,990x = 1,211,772 × 1,211,772
  4. Step 4: Simplify right side
    555,990x = 1,468,391,379,984
  5. Step 5: Solve for x
    x = 1,468,391,379,984/555,990
  6. Step 6: Final answer
    x = 2,641,039.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.