Home / 739,939.80-1,109,909.70-266,640.60

Finding the Fourth Proportional to 739,939.80, 1,109,909.70 and 266,640.60

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Solution

The fourth proportional to 739,939.80, 1,109,909.70 and 266,640.60 is: 399,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,939.80 : 1,109,909.70 = 266,640.60 : x
  2. Step 2: Convert to fraction form
    739,939.80/1,109,909.70 = 266,640.60/x
  3. Step 3: Cross multiply
    739,939.80x = 1,109,909.70 × 266,640.60
  4. Step 4: Simplify right side
    739,939.80x = 295,946,988,353.82
  5. Step 5: Solve for x
    x = 295,946,988,353.82/739,939.80
  6. Step 6: Final answer
    x = 399,960.90

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Similar ratio
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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.