Home / 2,115,916.88-2,920,859.09-1,428,519.77

Finding the Fourth Proportional to 2,115,916.88, 2,920,859.09 and 1,428,519.77

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Solution

The fourth proportional to 2,115,916.88, 2,920,859.09 and 1,428,519.77 is: 1,971,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,916.88 : 2,920,859.09 = 1,428,519.77 : x
  2. Step 2: Convert to fraction form
    2,115,916.88/2,920,859.09 = 1,428,519.77/x
  3. Step 3: Cross multiply
    2,115,916.88x = 2,920,859.09 × 1,428,519.77
  4. Step 4: Simplify right side
    2,115,916.88x = 4,172,504,955,608.76
  5. Step 5: Solve for x
    x = 4,172,504,955,608.76/2,115,916.88
  6. Step 6: Final answer
    x = 1,971,960.71

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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.