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Finding the Third Proportional to 1,212,613 and 2,640,509

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Solution

The third proportional to 1,212,613 and 2,640,509 is: 5,749,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,613 : 2,640,509 = 2,640,509 : x
  2. Step 2: Convert to fraction form
    1,212,613/2,640,509 = 2,640,509/x
  3. Step 3: Cross multiply
    1,212,613x = 2,640,509 × 2,640,509
  4. Step 4: Simplify right side
    1,212,613x = 6,972,287,779,081
  5. Step 5: Solve for x
    x = 6,972,287,779,081/1,212,613
  6. Step 6: Final answer
    x = 5,749,804.58

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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.