Home / 629,650.36-869,249.76-505,800.64

Finding the Fourth Proportional to 629,650.36, 869,249.76 and 505,800.64

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Solution

The fourth proportional to 629,650.36, 869,249.76 and 505,800.64 is: 698,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,650.36 : 869,249.76 = 505,800.64 : x
  2. Step 2: Convert to fraction form
    629,650.36/869,249.76 = 505,800.64/x
  3. Step 3: Cross multiply
    629,650.36x = 869,249.76 × 505,800.64
  4. Step 4: Simplify right side
    629,650.36x = 439,667,084,927.85
  5. Step 5: Solve for x
    x = 439,667,084,927.85/629,650.36
  6. Step 6: Final answer
    x = 698,271.79

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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.