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Finding the Fourth Proportional to 707,687.42, 976,601.91 and 385,402.89

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Solution

The fourth proportional to 707,687.42, 976,601.91 and 385,402.89 is: 531,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,687.42 : 976,601.91 = 385,402.89 : x
  2. Step 2: Convert to fraction form
    707,687.42/976,601.91 = 385,402.89/x
  3. Step 3: Cross multiply
    707,687.42x = 976,601.91 × 385,402.89
  4. Step 4: Simplify right side
    707,687.42x = 376,385,198,493.52
  5. Step 5: Solve for x
    x = 376,385,198,493.52/707,687.42
  6. Step 6: Final answer
    x = 531,852.33

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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.