Home / 621,121.10-857,141.96-349,190.19

Finding the Fourth Proportional to 621,121.10, 857,141.96 and 349,190.19

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Solution

The fourth proportional to 621,121.10, 857,141.96 and 349,190.19 is: 481,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,121.10 : 857,141.96 = 349,190.19 : x
  2. Step 2: Convert to fraction form
    621,121.10/857,141.96 = 349,190.19/x
  3. Step 3: Cross multiply
    621,121.10x = 857,141.96 × 349,190.19
  4. Step 4: Simplify right side
    621,121.10x = 299,305,562,123.42
  5. Step 5: Solve for x
    x = 299,305,562,123.42/621,121.10
  6. Step 6: Final answer
    x = 481,879.56

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Double scale
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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.