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Finding the Third Proportional to 1,189,417.50 and 1,915,143.75

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Solution

The third proportional to 1,189,417.50 and 1,915,143.75 is: 3,083,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,417.50 : 1,915,143.75 = 1,915,143.75 : x
  2. Step 2: Convert to fraction form
    1,189,417.50/1,915,143.75 = 1,915,143.75/x
  3. Step 3: Cross multiply
    1,189,417.50x = 1,915,143.75 × 1,915,143.75
  4. Step 4: Simplify right side
    1,189,417.50x = 3,667,775,583,164.06
  5. Step 5: Solve for x
    x = 3,667,775,583,164.06/1,189,417.50
  6. Step 6: Final answer
    x = 3,083,673.80

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.