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Finding the Fourth Proportional to 899,568, 1,241,370 and 491,666.49

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Solution

The fourth proportional to 899,568, 1,241,370 and 491,666.49 is: 678,481.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,568 : 1,241,370 = 491,666.49 : x
  2. Step 2: Convert to fraction form
    899,568/1,241,370 = 491,666.49/x
  3. Step 3: Cross multiply
    899,568x = 1,241,370 × 491,666.49
  4. Step 4: Simplify right side
    899,568x = 610,340,030,691.30
  5. Step 5: Solve for x
    x = 610,340,030,691.30/899,568
  6. Step 6: Final answer
    x = 678,481.26

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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.