Home / 2,115,991.08-2,920,040.28-1,198,398.78

Finding the Fourth Proportional to 2,115,991.08, 2,920,040.28 and 1,198,398.78

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Solution

The fourth proportional to 2,115,991.08, 2,920,040.28 and 1,198,398.78 is: 1,653,774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,991.08 : 2,920,040.28 = 1,198,398.78 : x
  2. Step 2: Convert to fraction form
    2,115,991.08/2,920,040.28 = 1,198,398.78/x
  3. Step 3: Cross multiply
    2,115,991.08x = 2,920,040.28 × 1,198,398.78
  4. Step 4: Simplify right side
    2,115,991.08x = 3,499,372,709,102.86
  5. Step 5: Solve for x
    x = 3,499,372,709,102.86/2,115,991.08
  6. Step 6: Final answer
    x = 1,653,774.79

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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.