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Finding the Fourth Proportional to 666,460.49, 999,709.79 and 261,635.85

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Solution

The fourth proportional to 666,460.49, 999,709.79 and 261,635.85 is: 392,461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,460.49 : 999,709.79 = 261,635.85 : x
  2. Step 2: Convert to fraction form
    666,460.49/999,709.79 = 261,635.85/x
  3. Step 3: Cross multiply
    666,460.49x = 999,709.79 × 261,635.85
  4. Step 4: Simplify right side
    666,460.49x = 261,559,919,351.79
  5. Step 5: Solve for x
    x = 261,559,919,351.79/666,460.49
  6. Step 6: Final answer
    x = 392,461.26

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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.