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Finding the Fourth Proportional to 648,185.80, 894,136.98 and 379,861.96

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Solution

The fourth proportional to 648,185.80, 894,136.98 and 379,861.96 is: 523,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,185.80 : 894,136.98 = 379,861.96 : x
  2. Step 2: Convert to fraction form
    648,185.80/894,136.98 = 379,861.96/x
  3. Step 3: Cross multiply
    648,185.80x = 894,136.98 × 379,861.96
  4. Step 4: Simplify right side
    648,185.80x = 339,648,625,731.28
  5. Step 5: Solve for x
    x = 339,648,625,731.28/648,185.80
  6. Step 6: Final answer
    x = 523,998.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.