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Finding the Fourth Proportional to 874,494, 1,311,741 and 243,424.26

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Solution

The fourth proportional to 874,494, 1,311,741 and 243,424.26 is: 365,136.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,494 : 1,311,741 = 243,424.26 : x
  2. Step 2: Convert to fraction form
    874,494/1,311,741 = 243,424.26/x
  3. Step 3: Cross multiply
    874,494x = 1,311,741 × 243,424.26
  4. Step 4: Simplify right side
    874,494x = 319,309,582,236.66
  5. Step 5: Solve for x
    x = 319,309,582,236.66/874,494
  6. Step 6: Final answer
    x = 365,136.39

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Similar ratio
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1.5x scale

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.