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Finding the Fourth Proportional to 558,540.80, 770,786.30 and 303,893.81

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Solution

The fourth proportional to 558,540.80, 770,786.30 and 303,893.81 is: 419,373.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,540.80 : 770,786.30 = 303,893.81 : x
  2. Step 2: Convert to fraction form
    558,540.80/770,786.30 = 303,893.81/x
  3. Step 3: Cross multiply
    558,540.80x = 770,786.30 × 303,893.81
  4. Step 4: Simplify right side
    558,540.80x = 234,237,180,029.40
  5. Step 5: Solve for x
    x = 234,237,180,029.40/558,540.80
  6. Step 6: Final answer
    x = 419,373.45

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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.