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Finding the Third Proportional to 1,686,876.75 and 3,642,543

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Solution

The third proportional to 1,686,876.75 and 3,642,543 is: 7,865,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,876.75 : 3,642,543 = 3,642,543 : x
  2. Step 2: Convert to fraction form
    1,686,876.75/3,642,543 = 3,642,543/x
  3. Step 3: Cross multiply
    1,686,876.75x = 3,642,543 × 3,642,543
  4. Step 4: Simplify right side
    1,686,876.75x = 13,268,119,506,849
  5. Step 5: Solve for x
    x = 13,268,119,506,849/1,686,876.75
  6. Step 6: Final answer
    x = 7,865,494.33

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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.