Home / 420,277,600.52-629,724,661.50-143,777,664.26

Finding the Fourth Proportional to 420,277,600.52, 629,724,661.50 and 143,777,664.26

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Solution

The fourth proportional to 420,277,600.52, 629,724,661.50 and 143,777,664.26 is: 215,429,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,277,600.52 : 629,724,661.50 = 143,777,664.26 : x
  2. Step 2: Convert to fraction form
    420,277,600.52/629,724,661.50 = 143,777,664.26/x
  3. Step 3: Cross multiply
    420,277,600.52x = 629,724,661.50 × 143,777,664.26
  4. Step 4: Simplify right side
    420,277,600.52x = 90,540,340,957,389,136
  5. Step 5: Solve for x
    x = 90,540,340,957,389,136/420,277,600.52
  6. Step 6: Final answer
    x = 215,429,851.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.