Home / 654,370.14-906,674.43-640,198.38

Finding the Fourth Proportional to 654,370.14, 906,674.43 and 640,198.38

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Solution

The fourth proportional to 654,370.14, 906,674.43 and 640,198.38 is: 887,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,370.14 : 906,674.43 = 640,198.38 : x
  2. Step 2: Convert to fraction form
    654,370.14/906,674.43 = 640,198.38/x
  3. Step 3: Cross multiply
    654,370.14x = 906,674.43 × 640,198.38
  4. Step 4: Simplify right side
    654,370.14x = 580,451,501,273.42
  5. Step 5: Solve for x
    x = 580,451,501,273.42/654,370.14
  6. Step 6: Final answer
    x = 887,038.49

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.