Home / 685,672.06-1,029,171.48-330,935.80

Finding the Fourth Proportional to 685,672.06, 1,029,171.48 and 330,935.80

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Solution

The fourth proportional to 685,672.06, 1,029,171.48 and 330,935.80 is: 496,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,672.06 : 1,029,171.48 = 330,935.80 : x
  2. Step 2: Convert to fraction form
    685,672.06/1,029,171.48 = 330,935.80/x
  3. Step 3: Cross multiply
    685,672.06x = 1,029,171.48 × 330,935.80
  4. Step 4: Simplify right side
    685,672.06x = 340,589,687,070.98
  5. Step 5: Solve for x
    x = 340,589,687,070.98/685,672.06
  6. Step 6: Final answer
    x = 496,723.88

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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.