Home / 2,158,219.74-2,978,343.81-1,191,350.70

Finding the Fourth Proportional to 2,158,219.74, 2,978,343.81 and 1,191,350.70

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Solution

The fourth proportional to 2,158,219.74, 2,978,343.81 and 1,191,350.70 is: 1,644,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,219.74 : 2,978,343.81 = 1,191,350.70 : x
  2. Step 2: Convert to fraction form
    2,158,219.74/2,978,343.81 = 1,191,350.70/x
  3. Step 3: Cross multiply
    2,158,219.74x = 2,978,343.81 × 1,191,350.70
  4. Step 4: Simplify right side
    2,158,219.74x = 3,548,251,982,884.17
  5. Step 5: Solve for x
    x = 3,548,251,982,884.17/2,158,219.74
  6. Step 6: Final answer
    x = 1,644,064.28

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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.