Home / 2,158,171.16-2,978,300.75-1,191,301.90

Finding the Fourth Proportional to 2,158,171.16, 2,978,300.75 and 1,191,301.90

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Solution

The fourth proportional to 2,158,171.16, 2,978,300.75 and 1,191,301.90 is: 1,644,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,171.16 : 2,978,300.75 = 1,191,301.90 : x
  2. Step 2: Convert to fraction form
    2,158,171.16/2,978,300.75 = 1,191,301.90/x
  3. Step 3: Cross multiply
    2,158,171.16x = 2,978,300.75 × 1,191,301.90
  4. Step 4: Simplify right side
    2,158,171.16x = 3,548,055,328,844.16
  5. Step 5: Solve for x
    x = 3,548,055,328,844.16/2,158,171.16
  6. Step 6: Final answer
    x = 1,644,010.17

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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.