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Finding the Fourth Proportional to 490,998.40, 734,942.40 and 385,244.80

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Solution

The fourth proportional to 490,998.40, 734,942.40 and 385,244.80 is: 576,646.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,998.40 : 734,942.40 = 385,244.80 : x
  2. Step 2: Convert to fraction form
    490,998.40/734,942.40 = 385,244.80/x
  3. Step 3: Cross multiply
    490,998.40x = 734,942.40 × 385,244.80
  4. Step 4: Simplify right side
    490,998.40x = 283,132,737,899.52
  5. Step 5: Solve for x
    x = 283,132,737,899.52/490,998.40
  6. Step 6: Final answer
    x = 576,646.97

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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.