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Finding the Fourth Proportional to 642,383.07, 886,450.07 and 355,882.43

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Solution

The fourth proportional to 642,383.07, 886,450.07 and 355,882.43 is: 491,096.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,383.07 : 886,450.07 = 355,882.43 : x
  2. Step 2: Convert to fraction form
    642,383.07/886,450.07 = 355,882.43/x
  3. Step 3: Cross multiply
    642,383.07x = 886,450.07 × 355,882.43
  4. Step 4: Simplify right side
    642,383.07x = 315,471,998,773.61
  5. Step 5: Solve for x
    x = 315,471,998,773.61/642,383.07
  6. Step 6: Final answer
    x = 491,096.38

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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.