Home / 861,786.60-1,292,768.40-329,755.12

Finding the Fourth Proportional to 861,786.60, 1,292,768.40 and 329,755.12

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Solution

The fourth proportional to 861,786.60, 1,292,768.40 and 329,755.12 is: 494,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,786.60 : 1,292,768.40 = 329,755.12 : x
  2. Step 2: Convert to fraction form
    861,786.60/1,292,768.40 = 329,755.12/x
  3. Step 3: Cross multiply
    861,786.60x = 1,292,768.40 × 329,755.12
  4. Step 4: Simplify right side
    861,786.60x = 426,296,998,874.21
  5. Step 5: Solve for x
    x = 426,296,998,874.21/861,786.60
  6. Step 6: Final answer
    x = 494,666.54

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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.