Home / 629,185.87-868,466.24-428,098.51

Finding the Fourth Proportional to 629,185.87, 868,466.24 and 428,098.51

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Solution

The fourth proportional to 629,185.87, 868,466.24 and 428,098.51 is: 590,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,185.87 : 868,466.24 = 428,098.51 : x
  2. Step 2: Convert to fraction form
    629,185.87/868,466.24 = 428,098.51/x
  3. Step 3: Cross multiply
    629,185.87x = 868,466.24 × 428,098.51
  4. Step 4: Simplify right side
    629,185.87x = 371,789,103,329.30
  5. Step 5: Solve for x
    x = 371,789,103,329.30/629,185.87
  6. Step 6: Final answer
    x = 590,905.04

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1.5x scale

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.