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Finding the Fourth Proportional to 694,353.44, 958,169.20 and 388,370.72

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Solution

The fourth proportional to 694,353.44, 958,169.20 and 388,370.72 is: 535,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,353.44 : 958,169.20 = 388,370.72 : x
  2. Step 2: Convert to fraction form
    694,353.44/958,169.20 = 388,370.72/x
  3. Step 3: Cross multiply
    694,353.44x = 958,169.20 × 388,370.72
  4. Step 4: Simplify right side
    694,353.44x = 372,124,862,085.82
  5. Step 5: Solve for x
    x = 372,124,862,085.82/694,353.44
  6. Step 6: Final answer
    x = 535,930.03

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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.