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Finding the Fourth Proportional to 641,558, 885,583.32 and 373,286

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Solution

The fourth proportional to 641,558, 885,583.32 and 373,286 is: 515,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,558 : 885,583.32 = 373,286 : x
  2. Step 2: Convert to fraction form
    641,558/885,583.32 = 373,286/x
  3. Step 3: Cross multiply
    641,558x = 885,583.32 × 373,286
  4. Step 4: Simplify right side
    641,558x = 330,575,855,189.52
  5. Step 5: Solve for x
    x = 330,575,855,189.52/641,558
  6. Step 6: Final answer
    x = 515,270.41

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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.