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Finding the Fourth Proportional to 574,215.66, 792,409.88 and 319,566.78

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Solution

The fourth proportional to 574,215.66, 792,409.88 and 319,566.78 is: 440,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,215.66 : 792,409.88 = 319,566.78 : x
  2. Step 2: Convert to fraction form
    574,215.66/792,409.88 = 319,566.78/x
  3. Step 3: Cross multiply
    574,215.66x = 792,409.88 × 319,566.78
  4. Step 4: Simplify right side
    574,215.66x = 253,227,873,791.79
  5. Step 5: Solve for x
    x = 253,227,873,791.79/574,215.66
  6. Step 6: Final answer
    x = 440,997.85

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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.