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Finding the Fourth Proportional to 650,119.34, 897,240.45 and 378,198.69

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Solution

The fourth proportional to 650,119.34, 897,240.45 and 378,198.69 is: 521,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,119.34 : 897,240.45 = 378,198.69 : x
  2. Step 2: Convert to fraction form
    650,119.34/897,240.45 = 378,198.69/x
  3. Step 3: Cross multiply
    650,119.34x = 897,240.45 × 378,198.69
  4. Step 4: Simplify right side
    650,119.34x = 339,335,162,805.01
  5. Step 5: Solve for x
    x = 339,335,162,805.01/650,119.34
  6. Step 6: Final answer
    x = 521,958.27

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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.