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Finding the Fourth Proportional to 694,333.08, 958,134.42 and 388,356.48

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Solution

The fourth proportional to 694,333.08, 958,134.42 and 388,356.48 is: 535,906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,333.08 : 958,134.42 = 388,356.48 : x
  2. Step 2: Convert to fraction form
    694,333.08/958,134.42 = 388,356.48/x
  3. Step 3: Cross multiply
    694,333.08x = 958,134.42 × 388,356.48
  4. Step 4: Simplify right side
    694,333.08x = 372,097,710,718.04
  5. Step 5: Solve for x
    x = 372,097,710,718.04/694,333.08
  6. Step 6: Final answer
    x = 535,906.64

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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.