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Finding the Third Proportional to 1,989,772 and 4,263,399.50

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Solution

The third proportional to 1,989,772 and 4,263,399.50 is: 9,135,004.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,772 : 4,263,399.50 = 4,263,399.50 : x
  2. Step 2: Convert to fraction form
    1,989,772/4,263,399.50 = 4,263,399.50/x
  3. Step 3: Cross multiply
    1,989,772x = 4,263,399.50 × 4,263,399.50
  4. Step 4: Simplify right side
    1,989,772x = 18,176,575,296,600.25
  5. Step 5: Solve for x
    x = 18,176,575,296,600.25/1,989,772
  6. Step 6: Final answer
    x = 9,135,004.06

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.