Home / 686,788.20-1,029,453.30-331,570.80

Finding the Fourth Proportional to 686,788.20, 1,029,453.30 and 331,570.80

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Solution

The fourth proportional to 686,788.20, 1,029,453.30 and 331,570.80 is: 497,004.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,788.20 : 1,029,453.30 = 331,570.80 : x
  2. Step 2: Convert to fraction form
    686,788.20/1,029,453.30 = 331,570.80/x
  3. Step 3: Cross multiply
    686,788.20x = 1,029,453.30 × 331,570.80
  4. Step 4: Simplify right side
    686,788.20x = 341,336,654,243.64
  5. Step 5: Solve for x
    x = 341,336,654,243.64/686,788.20
  6. Step 6: Final answer
    x = 497,004.25

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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.