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Finding the Fourth Proportional to 694,224.70, 958,118.83 and 388,318.07

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Solution

The fourth proportional to 694,224.70, 958,118.83 and 388,318.07 is: 535,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,224.70 : 958,118.83 = 388,318.07 : x
  2. Step 2: Convert to fraction form
    694,224.70/958,118.83 = 388,318.07/x
  3. Step 3: Cross multiply
    694,224.70x = 958,118.83 × 388,318.07
  4. Step 4: Simplify right side
    694,224.70x = 372,054,856,320.76
  5. Step 5: Solve for x
    x = 372,054,856,320.76/694,224.70
  6. Step 6: Final answer
    x = 535,928.58

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1.5x scale

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.