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Finding the Fourth Proportional to 666,047.79, 998,808.70 and 266,614.11

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Solution

The fourth proportional to 666,047.79, 998,808.70 and 266,614.11 is: 399,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,047.79 : 998,808.70 = 266,614.11 : x
  2. Step 2: Convert to fraction form
    666,047.79/998,808.70 = 266,614.11/x
  3. Step 3: Cross multiply
    666,047.79x = 998,808.70 × 266,614.11
  4. Step 4: Simplify right side
    666,047.79x = 266,296,492,610.76
  5. Step 5: Solve for x
    x = 266,296,492,610.76/666,047.79
  6. Step 6: Final answer
    x = 399,815.89

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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.