Home / 1,821,161.30-2,732,507.40-978,728.90

Finding the Fourth Proportional to 1,821,161.30, 2,732,507.40 and 978,728.90

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Solution

The fourth proportional to 1,821,161.30, 2,732,507.40 and 978,728.90 is: 1,468,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,161.30 : 2,732,507.40 = 978,728.90 : x
  2. Step 2: Convert to fraction form
    1,821,161.30/2,732,507.40 = 978,728.90/x
  3. Step 3: Cross multiply
    1,821,161.30x = 2,732,507.40 × 978,728.90
  4. Step 4: Simplify right side
    1,821,161.30x = 2,674,383,961,843.86
  5. Step 5: Solve for x
    x = 2,674,383,961,843.86/1,821,161.30
  6. Step 6: Final answer
    x = 1,468,504.72

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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.