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Finding the Fourth Proportional to 439,453.44, 606,468.96 and 278,249.76

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Solution

The fourth proportional to 439,453.44, 606,468.96 and 278,249.76 is: 383,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,453.44 : 606,468.96 = 278,249.76 : x
  2. Step 2: Convert to fraction form
    439,453.44/606,468.96 = 278,249.76/x
  3. Step 3: Cross multiply
    439,453.44x = 606,468.96 × 278,249.76
  4. Step 4: Simplify right side
    439,453.44x = 168,749,842,567.45
  5. Step 5: Solve for x
    x = 168,749,842,567.45/439,453.44
  6. Step 6: Final answer
    x = 383,999.37

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1.5x scale

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.