Home / 496,721.12-685,489.82-351,786.20

Finding the Fourth Proportional to 496,721.12, 685,489.82 and 351,786.20

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Solution

The fourth proportional to 496,721.12, 685,489.82 and 351,786.20 is: 485,475.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,721.12 : 685,489.82 = 351,786.20 : x
  2. Step 2: Convert to fraction form
    496,721.12/685,489.82 = 351,786.20/x
  3. Step 3: Cross multiply
    496,721.12x = 685,489.82 × 351,786.20
  4. Step 4: Simplify right side
    496,721.12x = 241,145,853,730.10
  5. Step 5: Solve for x
    x = 241,145,853,730.10/496,721.12
  6. Step 6: Final answer
    x = 485,475.34

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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.