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Finding the Fourth Proportional to 542,715.36, 748,936.04 and 300,958.92

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Solution

The fourth proportional to 542,715.36, 748,936.04 and 300,958.92 is: 415,317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,715.36 : 748,936.04 = 300,958.92 : x
  2. Step 2: Convert to fraction form
    542,715.36/748,936.04 = 300,958.92/x
  3. Step 3: Cross multiply
    542,715.36x = 748,936.04 × 300,958.92
  4. Step 4: Simplify right side
    542,715.36x = 225,398,981,747.48
  5. Step 5: Solve for x
    x = 225,398,981,747.48/542,715.36
  6. Step 6: Final answer
    x = 415,317.12

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Double scale
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Similar ratio
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1.5x scale

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.