Home / 857,990.57-1,286,221.07-325,885.26

Finding the Fourth Proportional to 857,990.57, 1,286,221.07 and 325,885.26

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Solution

The fourth proportional to 857,990.57, 1,286,221.07 and 325,885.26 is: 488,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,990.57 : 1,286,221.07 = 325,885.26 : x
  2. Step 2: Convert to fraction form
    857,990.57/1,286,221.07 = 325,885.26/x
  3. Step 3: Cross multiply
    857,990.57x = 1,286,221.07 × 325,885.26
  4. Step 4: Simplify right side
    857,990.57x = 419,160,487,814.43
  5. Step 5: Solve for x
    x = 419,160,487,814.43/857,990.57
  6. Step 6: Final answer
    x = 488,537.41

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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.