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Finding the Fourth Proportional to 693,134.96, 956,515.70 and 387,215.73

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Solution

The fourth proportional to 693,134.96, 956,515.70 and 387,215.73 is: 534,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,134.96 : 956,515.70 = 387,215.73 : x
  2. Step 2: Convert to fraction form
    693,134.96/956,515.70 = 387,215.73/x
  3. Step 3: Cross multiply
    693,134.96x = 956,515.70 × 387,215.73
  4. Step 4: Simplify right side
    693,134.96x = 370,377,923,095.88
  5. Step 5: Solve for x
    x = 370,377,923,095.88/693,134.96
  6. Step 6: Final answer
    x = 534,351.81

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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.