Home / 629,610.43-869,002.64-400,122.98

Finding the Fourth Proportional to 629,610.43, 869,002.64 and 400,122.98

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Solution

The fourth proportional to 629,610.43, 869,002.64 and 400,122.98 is: 552,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,610.43 : 869,002.64 = 400,122.98 : x
  2. Step 2: Convert to fraction form
    629,610.43/869,002.64 = 400,122.98/x
  3. Step 3: Cross multiply
    629,610.43x = 869,002.64 × 400,122.98
  4. Step 4: Simplify right side
    629,610.43x = 347,707,925,944.67
  5. Step 5: Solve for x
    x = 347,707,925,944.67/629,610.43
  6. Step 6: Final answer
    x = 552,258.84

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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.