Home / 699,824.73-965,788.83-393,920.85

Finding the Fourth Proportional to 699,824.73, 965,788.83 and 393,920.85

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Solution

The fourth proportional to 699,824.73, 965,788.83 and 393,920.85 is: 543,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,824.73 : 965,788.83 = 393,920.85 : x
  2. Step 2: Convert to fraction form
    699,824.73/965,788.83 = 393,920.85/x
  3. Step 3: Cross multiply
    699,824.73x = 965,788.83 × 393,920.85
  4. Step 4: Simplify right side
    699,824.73x = 380,444,356,834.11
  5. Step 5: Solve for x
    x = 380,444,356,834.11/699,824.73
  6. Step 6: Final answer
    x = 543,628.06

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1.5x scale

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.