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Finding the Fourth Proportional to 811,552.56, 1,217,439.42 and 338,127

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Solution

The fourth proportional to 811,552.56, 1,217,439.42 and 338,127 is: 507,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,552.56 : 1,217,439.42 = 338,127 : x
  2. Step 2: Convert to fraction form
    811,552.56/1,217,439.42 = 338,127/x
  3. Step 3: Cross multiply
    811,552.56x = 1,217,439.42 × 338,127
  4. Step 4: Simplify right side
    811,552.56x = 411,649,138,766.34
  5. Step 5: Solve for x
    x = 411,649,138,766.34/811,552.56
  6. Step 6: Final answer
    x = 507,236.57

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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.