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Finding the Fourth Proportional to 547,523.69, 755,507.93 and 305,775.41

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Solution

The fourth proportional to 547,523.69, 755,507.93 and 305,775.41 is: 421,928.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,523.69 : 755,507.93 = 305,775.41 : x
  2. Step 2: Convert to fraction form
    547,523.69/755,507.93 = 305,775.41/x
  3. Step 3: Cross multiply
    547,523.69x = 755,507.93 × 305,775.41
  4. Step 4: Simplify right side
    547,523.69x = 231,015,741,747.59
  5. Step 5: Solve for x
    x = 231,015,741,747.59/547,523.69
  6. Step 6: Final answer
    x = 421,928.31

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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.