Home / 685,871.80-1,028,807.70-187,235.80

Finding the Fourth Proportional to 685,871.80, 1,028,807.70 and 187,235.80

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Solution

The fourth proportional to 685,871.80, 1,028,807.70 and 187,235.80 is: 280,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,871.80 : 1,028,807.70 = 187,235.80 : x
  2. Step 2: Convert to fraction form
    685,871.80/1,028,807.70 = 187,235.80/x
  3. Step 3: Cross multiply
    685,871.80x = 1,028,807.70 × 187,235.80
  4. Step 4: Simplify right side
    685,871.80x = 192,629,632,755.66
  5. Step 5: Solve for x
    x = 192,629,632,755.66/685,871.80
  6. Step 6: Final answer
    x = 280,853.70

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Similar ratio
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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.