Home / 1,238,704.88-1,857,611.10-428,869.43

Finding the Fourth Proportional to 1,238,704.88, 1,857,611.10 and 428,869.43

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Solution

The fourth proportional to 1,238,704.88, 1,857,611.10 and 428,869.43 is: 643,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,704.88 : 1,857,611.10 = 428,869.43 : x
  2. Step 2: Convert to fraction form
    1,238,704.88/1,857,611.10 = 428,869.43/x
  3. Step 3: Cross multiply
    1,238,704.88x = 1,857,611.10 × 428,869.43
  4. Step 4: Simplify right side
    1,238,704.88x = 796,672,604,330.62
  5. Step 5: Solve for x
    x = 796,672,604,330.62/1,238,704.88
  6. Step 6: Final answer
    x = 643,149.64

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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.