Home / 1,115,998.40-1,673,997.60-668,100.80

Finding the Fourth Proportional to 1,115,998.40, 1,673,997.60 and 668,100.80

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Solution

The fourth proportional to 1,115,998.40, 1,673,997.60 and 668,100.80 is: 1,002,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,998.40 : 1,673,997.60 = 668,100.80 : x
  2. Step 2: Convert to fraction form
    1,115,998.40/1,673,997.60 = 668,100.80/x
  3. Step 3: Cross multiply
    1,115,998.40x = 1,673,997.60 × 668,100.80
  4. Step 4: Simplify right side
    1,115,998.40x = 1,118,399,135,758.08
  5. Step 5: Solve for x
    x = 1,118,399,135,758.08/1,115,998.40
  6. Step 6: Final answer
    x = 1,002,151.20

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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.