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Finding the Fourth Proportional to 547,503.94, 755,480.78 and 305,755.70

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Solution

The fourth proportional to 547,503.94, 755,480.78 and 305,755.70 is: 421,901.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,503.94 : 755,480.78 = 305,755.70 : x
  2. Step 2: Convert to fraction form
    547,503.94/755,480.78 = 305,755.70/x
  3. Step 3: Cross multiply
    547,503.94x = 755,480.78 × 305,755.70
  4. Step 4: Simplify right side
    547,503.94x = 230,992,554,725.45
  5. Step 5: Solve for x
    x = 230,992,554,725.45/547,503.94
  6. Step 6: Final answer
    x = 421,901.17

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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.