Home / 629,758.13-868,792.55-400,192.50

Finding the Fourth Proportional to 629,758.13, 868,792.55 and 400,192.50

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Solution

The fourth proportional to 629,758.13, 868,792.55 and 400,192.50 is: 552,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,758.13 : 868,792.55 = 400,192.50 : x
  2. Step 2: Convert to fraction form
    629,758.13/868,792.55 = 400,192.50/x
  3. Step 3: Cross multiply
    629,758.13x = 868,792.55 × 400,192.50
  4. Step 4: Simplify right side
    629,758.13x = 347,684,263,737.38
  5. Step 5: Solve for x
    x = 347,684,263,737.38/629,758.13
  6. Step 6: Final answer
    x = 552,091.74

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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.