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Finding the Fourth Proportional to 665,712.40, 998,568.60 and 266,414.80

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Solution

The fourth proportional to 665,712.40, 998,568.60 and 266,414.80 is: 399,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,712.40 : 998,568.60 = 266,414.80 : x
  2. Step 2: Convert to fraction form
    665,712.40/998,568.60 = 266,414.80/x
  3. Step 3: Cross multiply
    665,712.40x = 998,568.60 × 266,414.80
  4. Step 4: Simplify right side
    665,712.40x = 266,033,453,855.28
  5. Step 5: Solve for x
    x = 266,033,453,855.28/665,712.40
  6. Step 6: Final answer
    x = 399,622.20

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Similar ratio
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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.