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Finding the Fourth Proportional to 1,408,939.26, 1,944,336.96 and 764,359.38

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Solution

The fourth proportional to 1,408,939.26, 1,944,336.96 and 764,359.38 is: 1,054,816.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,939.26 : 1,944,336.96 = 764,359.38 : x
  2. Step 2: Convert to fraction form
    1,408,939.26/1,944,336.96 = 764,359.38/x
  3. Step 3: Cross multiply
    1,408,939.26x = 1,944,336.96 × 764,359.38
  4. Step 4: Simplify right side
    1,408,939.26x = 1,486,172,193,256.68
  5. Step 5: Solve for x
    x = 1,486,172,193,256.68/1,408,939.26
  6. Step 6: Final answer
    x = 1,054,816.37

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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.