Home / 2,158,018.20-2,978,137.26-1,178,015.40

Finding the Fourth Proportional to 2,158,018.20, 2,978,137.26 and 1,178,015.40

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Solution

The fourth proportional to 2,158,018.20, 2,978,137.26 and 1,178,015.40 is: 1,625,700.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,018.20 : 2,978,137.26 = 1,178,015.40 : x
  2. Step 2: Convert to fraction form
    2,158,018.20/2,978,137.26 = 1,178,015.40/x
  3. Step 3: Cross multiply
    2,158,018.20x = 2,978,137.26 × 1,178,015.40
  4. Step 4: Simplify right side
    2,158,018.20x = 3,508,291,555,593.80
  5. Step 5: Solve for x
    x = 3,508,291,555,593.80/2,158,018.20
  6. Step 6: Final answer
    x = 1,625,700.63

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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.