Home / 699,789.52-965,802.12-393,925.12

Finding the Fourth Proportional to 699,789.52, 965,802.12 and 393,925.12

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Solution

The fourth proportional to 699,789.52, 965,802.12 and 393,925.12 is: 543,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,789.52 : 965,802.12 = 393,925.12 : x
  2. Step 2: Convert to fraction form
    699,789.52/965,802.12 = 393,925.12/x
  3. Step 3: Cross multiply
    699,789.52x = 965,802.12 × 393,925.12
  4. Step 4: Simplify right side
    699,789.52x = 380,453,716,017.25
  5. Step 5: Solve for x
    x = 380,453,716,017.25/699,789.52
  6. Step 6: Final answer
    x = 543,668.78

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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.