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Finding the Fourth Proportional to 629,607.39, 868,751.79 and 353,928.51

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Solution

The fourth proportional to 629,607.39, 868,751.79 and 353,928.51 is: 488,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,607.39 : 868,751.79 = 353,928.51 : x
  2. Step 2: Convert to fraction form
    629,607.39/868,751.79 = 353,928.51/x
  3. Step 3: Cross multiply
    629,607.39x = 868,751.79 × 353,928.51
  4. Step 4: Simplify right side
    629,607.39x = 307,476,026,594.53
  5. Step 5: Solve for x
    x = 307,476,026,594.53/629,607.39
  6. Step 6: Final answer
    x = 488,361.53

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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.