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Finding the Fourth Proportional to 666,491.16, 998,481.24 and 329,136.96

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Solution

The fourth proportional to 666,491.16, 998,481.24 and 329,136.96 is: 493,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,491.16 : 998,481.24 = 329,136.96 : x
  2. Step 2: Convert to fraction form
    666,491.16/998,481.24 = 329,136.96/x
  3. Step 3: Cross multiply
    666,491.16x = 998,481.24 × 329,136.96
  4. Step 4: Simplify right side
    666,491.16x = 328,637,079,950.63
  5. Step 5: Solve for x
    x = 328,637,079,950.63/666,491.16
  6. Step 6: Final answer
    x = 493,085.43

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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.