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Finding the Fourth Proportional to 547,524.69, 755,509.30 and 305,776.41

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Solution

The fourth proportional to 547,524.69, 755,509.30 and 305,776.41 is: 421,929.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,524.69 : 755,509.30 = 305,776.41 : x
  2. Step 2: Convert to fraction form
    547,524.69/755,509.30 = 305,776.41/x
  3. Step 3: Cross multiply
    547,524.69x = 755,509.30 × 305,776.41
  4. Step 4: Simplify right side
    547,524.69x = 231,016,921,475.61
  5. Step 5: Solve for x
    x = 231,016,921,475.61/547,524.69
  6. Step 6: Final answer
    x = 421,929.69

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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.