Home / 686,579.20-1,029,139.80-331,361.80

Finding the Fourth Proportional to 686,579.20, 1,029,139.80 and 331,361.80

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Solution

The fourth proportional to 686,579.20, 1,029,139.80 and 331,361.80 is: 496,690.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,579.20 : 1,029,139.80 = 331,361.80 : x
  2. Step 2: Convert to fraction form
    686,579.20/1,029,139.80 = 331,361.80/x
  3. Step 3: Cross multiply
    686,579.20x = 1,029,139.80 × 331,361.80
  4. Step 4: Simplify right side
    686,579.20x = 341,017,616,579.64
  5. Step 5: Solve for x
    x = 341,017,616,579.64/686,579.20
  6. Step 6: Final answer
    x = 496,690.86

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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.