Home / 1,221,267.39-1,685,550.78-677,578.11

Finding the Fourth Proportional to 1,221,267.39, 1,685,550.78 and 677,578.11

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Solution

The fourth proportional to 1,221,267.39, 1,685,550.78 and 677,578.11 is: 935,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,267.39 : 1,685,550.78 = 677,578.11 : x
  2. Step 2: Convert to fraction form
    1,221,267.39/1,685,550.78 = 677,578.11/x
  3. Step 3: Cross multiply
    1,221,267.39x = 1,685,550.78 × 677,578.11
  4. Step 4: Simplify right side
    1,221,267.39x = 1,142,092,311,821.43
  5. Step 5: Solve for x
    x = 1,142,092,311,821.43/1,221,267.39
  6. Step 6: Final answer
    x = 935,169.74

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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.