Home / 1,221,097.86-1,685,950.20-762,910.56

Finding the Fourth Proportional to 1,221,097.86, 1,685,950.20 and 762,910.56

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Solution

The fourth proportional to 1,221,097.86, 1,685,950.20 and 762,910.56 is: 1,053,338.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,097.86 : 1,685,950.20 = 762,910.56 : x
  2. Step 2: Convert to fraction form
    1,221,097.86/1,685,950.20 = 762,910.56/x
  3. Step 3: Cross multiply
    1,221,097.86x = 1,685,950.20 × 762,910.56
  4. Step 4: Simplify right side
    1,221,097.86x = 1,286,229,211,214.11
  5. Step 5: Solve for x
    x = 1,286,229,211,214.11/1,221,097.86
  6. Step 6: Final answer
    x = 1,053,338.36

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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.