Home / 699,853.48-965,828.55-393,949.60

Finding the Fourth Proportional to 699,853.48, 965,828.55 and 393,949.60

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Solution

The fourth proportional to 699,853.48, 965,828.55 and 393,949.60 is: 543,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,853.48 : 965,828.55 = 393,949.60 : x
  2. Step 2: Convert to fraction form
    699,853.48/965,828.55 = 393,949.60/x
  3. Step 3: Cross multiply
    699,853.48x = 965,828.55 × 393,949.60
  4. Step 4: Simplify right side
    699,853.48x = 380,487,770,941.08
  5. Step 5: Solve for x
    x = 380,487,770,941.08/699,853.48
  6. Step 6: Final answer
    x = 543,667.76

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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.