Home / 686,573.70-1,029,131.55-331,356.30

Finding the Fourth Proportional to 686,573.70, 1,029,131.55 and 331,356.30

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Solution

The fourth proportional to 686,573.70, 1,029,131.55 and 331,356.30 is: 496,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,573.70 : 1,029,131.55 = 331,356.30 : x
  2. Step 2: Convert to fraction form
    686,573.70/1,029,131.55 = 331,356.30/x
  3. Step 3: Cross multiply
    686,573.70x = 1,029,131.55 × 331,356.30
  4. Step 4: Simplify right side
    686,573.70x = 341,009,222,621.27
  5. Step 5: Solve for x
    x = 341,009,222,621.27/686,573.70
  6. Step 6: Final answer
    x = 496,682.62

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1.5x scale

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.