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Finding the Fourth Proportional to 889,405, 1,227,370.38 and 481,496.39

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Solution

The fourth proportional to 889,405, 1,227,370.38 and 481,496.39 is: 664,460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,405 : 1,227,370.38 = 481,496.39 : x
  2. Step 2: Convert to fraction form
    889,405/1,227,370.38 = 481,496.39/x
  3. Step 3: Cross multiply
    889,405x = 1,227,370.38 × 481,496.39
  4. Step 4: Simplify right side
    889,405x = 590,974,407,162.93
  5. Step 5: Solve for x
    x = 590,974,407,162.93/889,405
  6. Step 6: Final answer
    x = 664,460.41

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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.