Home / 2,158,219.81-2,978,343.92-1,191,350.76

Finding the Fourth Proportional to 2,158,219.81, 2,978,343.92 and 1,191,350.76

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Solution

The fourth proportional to 2,158,219.81, 2,978,343.92 and 1,191,350.76 is: 1,644,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,219.81 : 2,978,343.92 = 1,191,350.76 : x
  2. Step 2: Convert to fraction form
    2,158,219.81/2,978,343.92 = 1,191,350.76/x
  3. Step 3: Cross multiply
    2,158,219.81x = 2,978,343.92 × 1,191,350.76
  4. Step 4: Simplify right side
    2,158,219.81x = 3,548,252,292,633.38
  5. Step 5: Solve for x
    x = 3,548,252,292,633.38/2,158,219.81
  6. Step 6: Final answer
    x = 1,644,064.37

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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.