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Finding the Fourth Proportional to 694,704, 958,731.84 and 388,777.76

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Solution

The fourth proportional to 694,704, 958,731.84 and 388,777.76 is: 536,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,704 : 958,731.84 = 388,777.76 : x
  2. Step 2: Convert to fraction form
    694,704/958,731.84 = 388,777.76/x
  3. Step 3: Cross multiply
    694,704x = 958,731.84 × 388,777.76
  4. Step 4: Simplify right side
    694,704x = 372,733,617,195.88
  5. Step 5: Solve for x
    x = 372,733,617,195.88/694,704
  6. Step 6: Final answer
    x = 536,535.87

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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.