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Finding the Fourth Proportional to 694,695.08, 958,696.40 and 388,768.98

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Solution

The fourth proportional to 694,695.08, 958,696.40 and 388,768.98 is: 536,510.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,695.08 : 958,696.40 = 388,768.98 : x
  2. Step 2: Convert to fraction form
    694,695.08/958,696.40 = 388,768.98/x
  3. Step 3: Cross multiply
    694,695.08x = 958,696.40 × 388,768.98
  4. Step 4: Simplify right side
    694,695.08x = 372,711,419,346.67
  5. Step 5: Solve for x
    x = 372,711,419,346.67/694,695.08
  6. Step 6: Final answer
    x = 536,510.81

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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.