Home / 686,586.20-1,029,150.30-331,368.80

Finding the Fourth Proportional to 686,586.20, 1,029,150.30 and 331,368.80

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Solution

The fourth proportional to 686,586.20, 1,029,150.30 and 331,368.80 is: 496,701.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,586.20 : 1,029,150.30 = 331,368.80 : x
  2. Step 2: Convert to fraction form
    686,586.20/1,029,150.30 = 331,368.80/x
  3. Step 3: Cross multiply
    686,586.20x = 1,029,150.30 × 331,368.80
  4. Step 4: Simplify right side
    686,586.20x = 341,028,299,930.64
  5. Step 5: Solve for x
    x = 341,028,299,930.64/686,586.20
  6. Step 6: Final answer
    x = 496,701.36

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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.