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Finding the Fourth Proportional to 629,964.90, 869,374.71 and 358,078.53

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Solution

The fourth proportional to 629,964.90, 869,374.71 and 358,078.53 is: 494,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,964.90 : 869,374.71 = 358,078.53 : x
  2. Step 2: Convert to fraction form
    629,964.90/869,374.71 = 358,078.53/x
  3. Step 3: Cross multiply
    629,964.90x = 869,374.71 × 358,078.53
  4. Step 4: Simplify right side
    629,964.90x = 311,304,418,175.98
  5. Step 5: Solve for x
    x = 311,304,418,175.98/629,964.90
  6. Step 6: Final answer
    x = 494,161.53

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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.