Home / 699,728.21-965,584.96-393,817.33

Finding the Fourth Proportional to 699,728.21, 965,584.96 and 393,817.33

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Solution

The fourth proportional to 699,728.21, 965,584.96 and 393,817.33 is: 543,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,728.21 : 965,584.96 = 393,817.33 : x
  2. Step 2: Convert to fraction form
    699,728.21/965,584.96 = 393,817.33/x
  3. Step 3: Cross multiply
    699,728.21x = 965,584.96 × 393,817.33
  4. Step 4: Simplify right side
    699,728.21x = 380,264,090,835.36
  5. Step 5: Solve for x
    x = 380,264,090,835.36/699,728.21
  6. Step 6: Final answer
    x = 543,445.42

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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.