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Finding the Fourth Proportional to 496,800.36, 685,636.92 and 305,809.92

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Solution

The fourth proportional to 496,800.36, 685,636.92 and 305,809.92 is: 422,049.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,800.36 : 685,636.92 = 305,809.92 : x
  2. Step 2: Convert to fraction form
    496,800.36/685,636.92 = 305,809.92/x
  3. Step 3: Cross multiply
    496,800.36x = 685,636.92 × 305,809.92
  4. Step 4: Simplify right side
    496,800.36x = 209,674,571,654.25
  5. Step 5: Solve for x
    x = 209,674,571,654.25/496,800.36
  6. Step 6: Final answer
    x = 422,049.96

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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.