Home / 2,115,976.05-2,920,940.46-1,428,578.66

Finding the Fourth Proportional to 2,115,976.05, 2,920,940.46 and 1,428,578.66

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Solution

The fourth proportional to 2,115,976.05, 2,920,940.46 and 1,428,578.66 is: 1,972,041.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,976.05 : 2,920,940.46 = 1,428,578.66 : x
  2. Step 2: Convert to fraction form
    2,115,976.05/2,920,940.46 = 1,428,578.66/x
  3. Step 3: Cross multiply
    2,115,976.05x = 2,920,940.46 × 1,428,578.66
  4. Step 4: Simplify right side
    2,115,976.05x = 4,172,793,201,143.69
  5. Step 5: Solve for x
    x = 4,172,793,201,143.69/2,115,976.05
  6. Step 6: Final answer
    x = 1,972,041.79

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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.