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Finding the Fourth Proportional to 391,978,586.68, 588,376,472.70 and 173,782,161.65

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Solution

The fourth proportional to 391,978,586.68, 588,376,472.70 and 173,782,161.65 is: 260,854,390.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,978,586.68 : 588,376,472.70 = 173,782,161.65 : x
  2. Step 2: Convert to fraction form
    391,978,586.68/588,376,472.70 = 173,782,161.65/x
  3. Step 3: Cross multiply
    391,978,586.68x = 588,376,472.70 × 173,782,161.65
  4. Step 4: Simplify right side
    391,978,586.68x = 102,249,335,291,930,848
  5. Step 5: Solve for x
    x = 102,249,335,291,930,848/391,978,586.68
  6. Step 6: Final answer
    x = 260,854,390.44

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