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Finding the Third Proportional to 1,189,849.50 and 1,787,409.28

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Solution

The third proportional to 1,189,849.50 and 1,787,409.28 is: 2,685,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,849.50 : 1,787,409.28 = 1,787,409.28 : x
  2. Step 2: Convert to fraction form
    1,189,849.50/1,787,409.28 = 1,787,409.28/x
  3. Step 3: Cross multiply
    1,189,849.50x = 1,787,409.28 × 1,787,409.28
  4. Step 4: Simplify right side
    1,189,849.50x = 3,194,831,938,698.64
  5. Step 5: Solve for x
    x = 3,194,831,938,698.64/1,189,849.50
  6. Step 6: Final answer
    x = 2,685,072.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.