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Finding the Fourth Proportional to 438,896.09, 658,476.89 and 311,059.62

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Solution

The fourth proportional to 438,896.09, 658,476.89 and 311,059.62 is: 466,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,896.09 : 658,476.89 = 311,059.62 : x
  2. Step 2: Convert to fraction form
    438,896.09/658,476.89 = 311,059.62/x
  3. Step 3: Cross multiply
    438,896.09x = 658,476.89 × 311,059.62
  4. Step 4: Simplify right side
    438,896.09x = 204,825,567,926.99
  5. Step 5: Solve for x
    x = 204,825,567,926.99/438,896.09
  6. Step 6: Final answer
    x = 466,683.51

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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.