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Finding the Fourth Proportional to 666,002.39, 998,917.02 and 266,647.09

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Solution

The fourth proportional to 666,002.39, 998,917.02 and 266,647.09 is: 399,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,002.39 : 998,917.02 = 266,647.09 : x
  2. Step 2: Convert to fraction form
    666,002.39/998,917.02 = 266,647.09/x
  3. Step 3: Cross multiply
    666,002.39x = 998,917.02 × 266,647.09
  4. Step 4: Simplify right side
    666,002.39x = 266,358,316,534.47
  5. Step 5: Solve for x
    x = 266,358,316,534.47/666,002.39
  6. Step 6: Final answer
    x = 399,935.98

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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.