Home / 642,273.27-963,431.78-305,139.93

Finding the Fourth Proportional to 642,273.27, 963,431.78 and 305,139.93

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Solution

The fourth proportional to 642,273.27, 963,431.78 and 305,139.93 is: 457,720.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,273.27 : 963,431.78 = 305,139.93 : x
  2. Step 2: Convert to fraction form
    642,273.27/963,431.78 = 305,139.93/x
  3. Step 3: Cross multiply
    642,273.27x = 963,431.78 × 305,139.93
  4. Step 4: Simplify right side
    642,273.27x = 293,981,504,383.28
  5. Step 5: Solve for x
    x = 293,981,504,383.28/642,273.27
  6. Step 6: Final answer
    x = 457,720.29

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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.