Home / 686,907.20-1,030,576.80-331,932.80

Finding the Fourth Proportional to 686,907.20, 1,030,576.80 and 331,932.80

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Solution

The fourth proportional to 686,907.20, 1,030,576.80 and 331,932.80 is: 498,003.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,907.20 : 1,030,576.80 = 331,932.80 : x
  2. Step 2: Convert to fraction form
    686,907.20/1,030,576.80 = 331,932.80/x
  3. Step 3: Cross multiply
    686,907.20x = 1,030,576.80 × 331,932.80
  4. Step 4: Simplify right side
    686,907.20x = 342,082,242,839.04
  5. Step 5: Solve for x
    x = 342,082,242,839.04/686,907.20
  6. Step 6: Final answer
    x = 498,003.58

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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.