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Finding the Fourth Proportional to 629,184.87, 868,464.86 and 428,097.51

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Solution

The fourth proportional to 629,184.87, 868,464.86 and 428,097.51 is: 590,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,184.87 : 868,464.86 = 428,097.51 : x
  2. Step 2: Convert to fraction form
    629,184.87/868,464.86 = 428,097.51/x
  3. Step 3: Cross multiply
    629,184.87x = 868,464.86 × 428,097.51
  4. Step 4: Simplify right side
    629,184.87x = 371,787,641,948.01
  5. Step 5: Solve for x
    x = 371,787,641,948.01/629,184.87
  6. Step 6: Final answer
    x = 590,903.66

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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.