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Finding the Fourth Proportional to 666,042.66, 998,801.01 and 266,608.98

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Solution

The fourth proportional to 666,042.66, 998,801.01 and 266,608.98 is: 399,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,042.66 : 998,801.01 = 266,608.98 : x
  2. Step 2: Convert to fraction form
    666,042.66/998,801.01 = 266,608.98/x
  3. Step 3: Cross multiply
    666,042.66x = 998,801.01 × 266,608.98
  4. Step 4: Simplify right side
    666,042.66x = 266,289,318,499.07
  5. Step 5: Solve for x
    x = 266,289,318,499.07/666,042.66
  6. Step 6: Final answer
    x = 399,808.20

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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.