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Finding the Fourth Proportional to 666,427.80, 998,766.90 and 266,741.40

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Solution

The fourth proportional to 666,427.80, 998,766.90 and 266,741.40 is: 399,761.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,427.80 : 998,766.90 = 266,741.40 : x
  2. Step 2: Convert to fraction form
    666,427.80/998,766.90 = 266,741.40/x
  3. Step 3: Cross multiply
    666,427.80x = 998,766.90 × 266,741.40
  4. Step 4: Simplify right side
    666,427.80x = 266,412,481,179.66
  5. Step 5: Solve for x
    x = 266,412,481,179.66/666,427.80
  6. Step 6: Final answer
    x = 399,761.96

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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.