Home / 2,138,338.91-3,207,120.89-858,894.71

Finding the Fourth Proportional to 2,138,338.91, 3,207,120.89 and 858,894.71

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Solution

The fourth proportional to 2,138,338.91, 3,207,120.89 and 858,894.71 is: 1,288,186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,338.91 : 3,207,120.89 = 858,894.71 : x
  2. Step 2: Convert to fraction form
    2,138,338.91/3,207,120.89 = 858,894.71/x
  3. Step 3: Cross multiply
    2,138,338.91x = 3,207,120.89 × 858,894.71
  4. Step 4: Simplify right side
    2,138,338.91x = 2,754,579,146,421.41
  5. Step 5: Solve for x
    x = 2,754,579,146,421.41/2,138,338.91
  6. Step 6: Final answer
    x = 1,288,186.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.