Home / 699,364.53-965,121.48-393,441.03

Finding the Fourth Proportional to 699,364.53, 965,121.48 and 393,441.03

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Solution

The fourth proportional to 699,364.53, 965,121.48 and 393,441.03 is: 542,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,364.53 : 965,121.48 = 393,441.03 : x
  2. Step 2: Convert to fraction form
    699,364.53/965,121.48 = 393,441.03/x
  3. Step 3: Cross multiply
    699,364.53x = 965,121.48 × 393,441.03
  4. Step 4: Simplify right side
    699,364.53x = 379,718,389,166.32
  5. Step 5: Solve for x
    x = 379,718,389,166.32/699,364.53
  6. Step 6: Final answer
    x = 542,947.74

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Double scale
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Similar ratio
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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.