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Finding the Fourth Proportional to 629,391.25, 868,559.93 and 342,911.26

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Solution

The fourth proportional to 629,391.25, 868,559.93 and 342,911.26 is: 473,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,391.25 : 868,559.93 = 342,911.26 : x
  2. Step 2: Convert to fraction form
    629,391.25/868,559.93 = 342,911.26/x
  3. Step 3: Cross multiply
    629,391.25x = 868,559.93 × 342,911.26
  4. Step 4: Simplify right side
    629,391.25x = 297,838,979,981.81
  5. Step 5: Solve for x
    x = 297,838,979,981.81/629,391.25
  6. Step 6: Final answer
    x = 473,217.54

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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.