Home / 1,189,997-1,642,207.66-646,137.25

Finding the Fourth Proportional to 1,189,997, 1,642,207.66 and 646,137.25

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Solution

The fourth proportional to 1,189,997, 1,642,207.66 and 646,137.25 is: 891,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,997 : 1,642,207.66 = 646,137.25 : x
  2. Step 2: Convert to fraction form
    1,189,997/1,642,207.66 = 646,137.25/x
  3. Step 3: Cross multiply
    1,189,997x = 1,642,207.66 × 646,137.25
  4. Step 4: Simplify right side
    1,189,997x = 1,061,091,533,150.30
  5. Step 5: Solve for x
    x = 1,061,091,533,150.30/1,189,997
  6. Step 6: Final answer
    x = 891,675.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.