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Finding the Fourth Proportional to 1,997,660.56, 2,996,905.56 and 667,930

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Solution

The fourth proportional to 1,997,660.56, 2,996,905.56 and 667,930 is: 1,002,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997,660.56 : 2,996,905.56 = 667,930 : x
  2. Step 2: Convert to fraction form
    1,997,660.56/2,996,905.56 = 667,930/x
  3. Step 3: Cross multiply
    1,997,660.56x = 2,996,905.56 × 667,930
  4. Step 4: Simplify right side
    1,997,660.56x = 2,001,723,130,690.80
  5. Step 5: Solve for x
    x = 2,001,723,130,690.80/1,997,660.56
  6. Step 6: Final answer
    x = 1,002,033.66

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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.