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Finding the Fourth Proportional to 419,859.56, 579,049.62 and 354,767.29

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Solution

The fourth proportional to 419,859.56, 579,049.62 and 354,767.29 is: 489,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,859.56 : 579,049.62 = 354,767.29 : x
  2. Step 2: Convert to fraction form
    419,859.56/579,049.62 = 354,767.29/x
  3. Step 3: Cross multiply
    419,859.56x = 579,049.62 × 354,767.29
  4. Step 4: Simplify right side
    419,859.56x = 205,427,864,462.93
  5. Step 5: Solve for x
    x = 205,427,864,462.93/419,859.56
  6. Step 6: Final answer
    x = 489,277.57

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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.