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Finding the Fourth Proportional to 451,074.61, 621,062.80 and 382,956.85

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Solution

The fourth proportional to 451,074.61, 621,062.80 and 382,956.85 is: 527,274.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,074.61 : 621,062.80 = 382,956.85 : x
  2. Step 2: Convert to fraction form
    451,074.61/621,062.80 = 382,956.85/x
  3. Step 3: Cross multiply
    451,074.61x = 621,062.80 × 382,956.85
  4. Step 4: Simplify right side
    451,074.61x = 237,840,253,540.18
  5. Step 5: Solve for x
    x = 237,840,253,540.18/451,074.61
  6. Step 6: Final answer
    x = 527,274.75

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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.