Home / 776,721.80-1,165,082.70-303,422.60

Finding the Fourth Proportional to 776,721.80, 1,165,082.70 and 303,422.60

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Solution

The fourth proportional to 776,721.80, 1,165,082.70 and 303,422.60 is: 455,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,721.80 : 1,165,082.70 = 303,422.60 : x
  2. Step 2: Convert to fraction form
    776,721.80/1,165,082.70 = 303,422.60/x
  3. Step 3: Cross multiply
    776,721.80x = 1,165,082.70 × 303,422.60
  4. Step 4: Simplify right side
    776,721.80x = 353,512,422,049.02
  5. Step 5: Solve for x
    x = 353,512,422,049.02/776,721.80
  6. Step 6: Final answer
    x = 455,133.90

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Double scale
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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.