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Finding the Fourth Proportional to 707,958.04, 976,970.79 and 385,672

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Solution

The fourth proportional to 707,958.04, 976,970.79 and 385,672 is: 532,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,958.04 : 976,970.79 = 385,672 : x
  2. Step 2: Convert to fraction form
    707,958.04/976,970.79 = 385,672/x
  3. Step 3: Cross multiply
    707,958.04x = 976,970.79 × 385,672
  4. Step 4: Simplify right side
    707,958.04x = 376,790,278,520.88
  5. Step 5: Solve for x
    x = 376,790,278,520.88/707,958.04
  6. Step 6: Final answer
    x = 532,221.20

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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.