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Finding the Fourth Proportional to 1,997,999.10, 2,996,998.65 and 1,814,947.20

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Solution

The fourth proportional to 1,997,999.10, 2,996,998.65 and 1,814,947.20 is: 2,722,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997,999.10 : 2,996,998.65 = 1,814,947.20 : x
  2. Step 2: Convert to fraction form
    1,997,999.10/2,996,998.65 = 1,814,947.20/x
  3. Step 3: Cross multiply
    1,997,999.10x = 2,996,998.65 × 1,814,947.20
  4. Step 4: Simplify right side
    1,997,999.10x = 5,439,394,308,221.28
  5. Step 5: Solve for x
    x = 5,439,394,308,221.28/1,997,999.10
  6. Step 6: Final answer
    x = 2,722,420.80

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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.