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Finding the Fourth Proportional to 561,042.27, 774,241.17 and 306,393.48

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Solution

The fourth proportional to 561,042.27, 774,241.17 and 306,393.48 is: 422,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,042.27 : 774,241.17 = 306,393.48 : x
  2. Step 2: Convert to fraction form
    561,042.27/774,241.17 = 306,393.48/x
  3. Step 3: Cross multiply
    561,042.27x = 774,241.17 × 306,393.48
  4. Step 4: Simplify right side
    561,042.27x = 237,222,446,435.57
  5. Step 5: Solve for x
    x = 237,222,446,435.57/561,042.27
  6. Step 6: Final answer
    x = 422,824.55

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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.