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Finding the Fourth Proportional to 613,029.70, 919,544.55 and 443,755.90

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Solution

The fourth proportional to 613,029.70, 919,544.55 and 443,755.90 is: 665,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,029.70 : 919,544.55 = 443,755.90 : x
  2. Step 2: Convert to fraction form
    613,029.70/919,544.55 = 443,755.90/x
  3. Step 3: Cross multiply
    613,029.70x = 919,544.55 × 443,755.90
  4. Step 4: Simplify right side
    613,029.70x = 408,053,319,375.35
  5. Step 5: Solve for x
    x = 408,053,319,375.35/613,029.70
  6. Step 6: Final answer
    x = 665,633.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.