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Finding the Fourth Proportional to 843,333.15, 1,264,978.70 and 394,556.13

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Solution

The fourth proportional to 843,333.15, 1,264,978.70 and 394,556.13 is: 591,824.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,333.15 : 1,264,978.70 = 394,556.13 : x
  2. Step 2: Convert to fraction form
    843,333.15/1,264,978.70 = 394,556.13/x
  3. Step 3: Cross multiply
    843,333.15x = 1,264,978.70 × 394,556.13
  4. Step 4: Simplify right side
    843,333.15x = 499,105,100,404.43
  5. Step 5: Solve for x
    x = 499,105,100,404.43/843,333.15
  6. Step 6: Final answer
    x = 591,824.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.