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Finding the Fourth Proportional to 474,699.69, 655,027.65 and 378,149.43

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Solution

The fourth proportional to 474,699.69, 655,027.65 and 378,149.43 is: 521,800.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,699.69 : 655,027.65 = 378,149.43 : x
  2. Step 2: Convert to fraction form
    474,699.69/655,027.65 = 378,149.43/x
  3. Step 3: Cross multiply
    474,699.69x = 655,027.65 × 378,149.43
  4. Step 4: Simplify right side
    474,699.69x = 247,698,332,481.74
  5. Step 5: Solve for x
    x = 247,698,332,481.74/474,699.69
  6. Step 6: Final answer
    x = 521,800.07

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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.