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Finding the Fourth Proportional to 558,491.20, 770,721.20 and 303,844.21

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Solution

The fourth proportional to 558,491.20, 770,721.20 and 303,844.21 is: 419,306.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,491.20 : 770,721.20 = 303,844.21 : x
  2. Step 2: Convert to fraction form
    558,491.20/770,721.20 = 303,844.21/x
  3. Step 3: Cross multiply
    558,491.20x = 770,721.20 × 303,844.21
  4. Step 4: Simplify right side
    558,491.20x = 234,179,174,144.25
  5. Step 5: Solve for x
    x = 234,179,174,144.25/558,491.20
  6. Step 6: Final answer
    x = 419,306.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.