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Finding the Fourth Proportional to 573,872.80, 791,926.32 and 319,221.76

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Solution

The fourth proportional to 573,872.80, 791,926.32 and 319,221.76 is: 440,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,872.80 : 791,926.32 = 319,221.76 : x
  2. Step 2: Convert to fraction form
    573,872.80/791,926.32 = 319,221.76/x
  3. Step 3: Cross multiply
    573,872.80x = 791,926.32 × 319,221.76
  4. Step 4: Simplify right side
    573,872.80x = 252,800,113,660.72
  5. Step 5: Solve for x
    x = 252,800,113,660.72/573,872.80
  6. Step 6: Final answer
    x = 440,515.94

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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.