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Finding the Fourth Proportional to 662,391.40, 993,716.70 and 283,311.40

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Solution

The fourth proportional to 662,391.40, 993,716.70 and 283,311.40 is: 425,022.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,391.40 : 993,716.70 = 283,311.40 : x
  2. Step 2: Convert to fraction form
    662,391.40/993,716.70 = 283,311.40/x
  3. Step 3: Cross multiply
    662,391.40x = 993,716.70 × 283,311.40
  4. Step 4: Simplify right side
    662,391.40x = 281,531,269,480.38
  5. Step 5: Solve for x
    x = 281,531,269,480.38/662,391.40
  6. Step 6: Final answer
    x = 425,022.53

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.