Home / 699,853.73-965,828.90-393,949.85

Finding the Fourth Proportional to 699,853.73, 965,828.90 and 393,949.85

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Solution

The fourth proportional to 699,853.73, 965,828.90 and 393,949.85 is: 543,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,853.73 : 965,828.90 = 393,949.85 : x
  2. Step 2: Convert to fraction form
    699,853.73/965,828.90 = 393,949.85/x
  3. Step 3: Cross multiply
    699,853.73x = 965,828.90 × 393,949.85
  4. Step 4: Simplify right side
    699,853.73x = 380,488,148,310.92
  5. Step 5: Solve for x
    x = 380,488,148,310.92/699,853.73
  6. Step 6: Final answer
    x = 543,668.10

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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.