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Finding the Fourth Proportional to 694,323.58, 958,121.34 and 388,346.95

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Solution

The fourth proportional to 694,323.58, 958,121.34 and 388,346.95 is: 535,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,323.58 : 958,121.34 = 388,346.95 : x
  2. Step 2: Convert to fraction form
    694,323.58/958,121.34 = 388,346.95/x
  3. Step 3: Cross multiply
    694,323.58x = 958,121.34 × 388,346.95
  4. Step 4: Simplify right side
    694,323.58x = 372,083,500,118.91
  5. Step 5: Solve for x
    x = 372,083,500,118.91/694,323.58
  6. Step 6: Final answer
    x = 535,893.51

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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.