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Finding the Fourth Proportional to 547,120.17, 755,105.09 and 394,663.59

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Solution

The fourth proportional to 547,120.17, 755,105.09 and 394,663.59 is: 544,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,120.17 : 755,105.09 = 394,663.59 : x
  2. Step 2: Convert to fraction form
    547,120.17/755,105.09 = 394,663.59/x
  3. Step 3: Cross multiply
    547,120.17x = 755,105.09 × 394,663.59
  4. Step 4: Simplify right side
    547,120.17x = 298,012,483,673.36
  5. Step 5: Solve for x
    x = 298,012,483,673.36/547,120.17
  6. Step 6: Final answer
    x = 544,692.92

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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.