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Finding the Fourth Proportional to 629,847.93, 869,164.29 and 354,197.91

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Solution

The fourth proportional to 629,847.93, 869,164.29 and 354,197.91 is: 488,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,847.93 : 869,164.29 = 354,197.91 : x
  2. Step 2: Convert to fraction form
    629,847.93/869,164.29 = 354,197.91/x
  3. Step 3: Cross multiply
    629,847.93x = 869,164.29 × 354,197.91
  4. Step 4: Simplify right side
    629,847.93x = 307,856,178,224
  5. Step 5: Solve for x
    x = 307,856,178,224/629,847.93
  6. Step 6: Final answer
    x = 488,778.58

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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.