Home / 642,632.72-886,833.15-356,195.87

Finding the Fourth Proportional to 642,632.72, 886,833.15 and 356,195.87

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Solution

The fourth proportional to 642,632.72, 886,833.15 and 356,195.87 is: 491,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,632.72 : 886,833.15 = 356,195.87 : x
  2. Step 2: Convert to fraction form
    642,632.72/886,833.15 = 356,195.87/x
  3. Step 3: Cross multiply
    642,632.72x = 886,833.15 × 356,195.87
  4. Step 4: Simplify right side
    642,632.72x = 315,886,300,974.93
  5. Step 5: Solve for x
    x = 315,886,300,974.93/642,632.72
  6. Step 6: Final answer
    x = 491,550.30

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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.