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Finding the Third Proportional to 721,581 and 1,557,569

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Solution

The third proportional to 721,581 and 1,557,569 is: 3,362,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,581 : 1,557,569 = 1,557,569 : x
  2. Step 2: Convert to fraction form
    721,581/1,557,569 = 1,557,569/x
  3. Step 3: Cross multiply
    721,581x = 1,557,569 × 1,557,569
  4. Step 4: Simplify right side
    721,581x = 2,426,021,189,761
  5. Step 5: Solve for x
    x = 2,426,021,189,761/721,581
  6. Step 6: Final answer
    x = 3,362,091.28

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.