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Finding the Third Proportional to 939,739.50 and 1,431,640

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Solution

The third proportional to 939,739.50 and 1,431,640 is: 2,181,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,739.50 : 1,431,640 = 1,431,640 : x
  2. Step 2: Convert to fraction form
    939,739.50/1,431,640 = 1,431,640/x
  3. Step 3: Cross multiply
    939,739.50x = 1,431,640 × 1,431,640
  4. Step 4: Simplify right side
    939,739.50x = 2,049,593,089,600
  5. Step 5: Solve for x
    x = 2,049,593,089,600/939,739.50
  6. Step 6: Final answer
    x = 2,181,022.60

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.