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Finding the Fourth Proportional to 666,046.79, 998,807.20 and 266,613.11

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Solution

The fourth proportional to 666,046.79, 998,807.20 and 266,613.11 is: 399,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,046.79 : 998,807.20 = 266,613.11 : x
  2. Step 2: Convert to fraction form
    666,046.79/998,807.20 = 266,613.11/x
  3. Step 3: Cross multiply
    666,046.79x = 998,807.20 × 266,613.11
  4. Step 4: Simplify right side
    666,046.79x = 266,295,093,882.39
  5. Step 5: Solve for x
    x = 266,295,093,882.39/666,046.79
  6. Step 6: Final answer
    x = 399,814.39

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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.