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Finding the Fourth Proportional to 666,048.79, 998,810.20 and 266,615.11

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Solution

The fourth proportional to 666,048.79, 998,810.20 and 266,615.11 is: 399,817.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,048.79 : 998,810.20 = 266,615.11 : x
  2. Step 2: Convert to fraction form
    666,048.79/998,810.20 = 266,615.11/x
  3. Step 3: Cross multiply
    666,048.79x = 998,810.20 × 266,615.11
  4. Step 4: Simplify right side
    666,048.79x = 266,297,891,342.12
  5. Step 5: Solve for x
    x = 266,297,891,342.12/666,048.79
  6. Step 6: Final answer
    x = 399,817.39

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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.