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Finding the Fourth Proportional to 629,857, 869,237.22 and 361,602.28

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Solution

The fourth proportional to 629,857, 869,237.22 and 361,602.28 is: 499,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857 : 869,237.22 = 361,602.28 : x
  2. Step 2: Convert to fraction form
    629,857/869,237.22 = 361,602.28/x
  3. Step 3: Cross multiply
    629,857x = 869,237.22 × 361,602.28
  4. Step 4: Simplify right side
    629,857x = 314,318,160,612.86
  5. Step 5: Solve for x
    x = 314,318,160,612.86/629,857
  6. Step 6: Final answer
    x = 499,030.99

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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.