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Finding the Fourth Proportional to 1,179,147, 1,627,224.48 and 642,603

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Solution

The fourth proportional to 1,179,147, 1,627,224.48 and 642,603 is: 886,793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,147 : 1,627,224.48 = 642,603 : x
  2. Step 2: Convert to fraction form
    1,179,147/1,627,224.48 = 642,603/x
  3. Step 3: Cross multiply
    1,179,147x = 1,627,224.48 × 642,603
  4. Step 4: Simplify right side
    1,179,147x = 1,045,659,332,521.44
  5. Step 5: Solve for x
    x = 1,045,659,332,521.44/1,179,147
  6. Step 6: Final answer
    x = 886,793.02

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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.