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Finding the Fourth Proportional to 694,255.05, 958,160.70 and 388,348.47

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Solution

The fourth proportional to 694,255.05, 958,160.70 and 388,348.47 is: 535,970.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,255.05 : 958,160.70 = 388,348.47 : x
  2. Step 2: Convert to fraction form
    694,255.05/958,160.70 = 388,348.47/x
  3. Step 3: Cross multiply
    694,255.05x = 958,160.70 × 388,348.47
  4. Step 4: Simplify right side
    694,255.05x = 372,100,241,859.13
  5. Step 5: Solve for x
    x = 372,100,241,859.13/694,255.05
  6. Step 6: Final answer
    x = 535,970.52

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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.