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Finding the Fourth Proportional to 557,910.28, 769,911.78 and 303,254.92

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Solution

The fourth proportional to 557,910.28, 769,911.78 and 303,254.92 is: 418,489.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,910.28 : 769,911.78 = 303,254.92 : x
  2. Step 2: Convert to fraction form
    557,910.28/769,911.78 = 303,254.92/x
  3. Step 3: Cross multiply
    557,910.28x = 769,911.78 × 303,254.92
  4. Step 4: Simplify right side
    557,910.28x = 233,479,535,250.96
  5. Step 5: Solve for x
    x = 233,479,535,250.96/557,910.28
  6. Step 6: Final answer
    x = 418,489.39

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Double scale
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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.