Home / 1,919,626.96-2,879,144.52-640,256.80

Finding the Fourth Proportional to 1,919,626.96, 2,879,144.52 and 640,256.80

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Solution

The fourth proportional to 1,919,626.96, 2,879,144.52 and 640,256.80 is: 960,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,626.96 : 2,879,144.52 = 640,256.80 : x
  2. Step 2: Convert to fraction form
    1,919,626.96/2,879,144.52 = 640,256.80/x
  3. Step 3: Cross multiply
    1,919,626.96x = 2,879,144.52 × 640,256.80
  4. Step 4: Simplify right side
    1,919,626.96x = 1,843,391,857,112.74
  5. Step 5: Solve for x
    x = 1,843,391,857,112.74/1,919,626.96
  6. Step 6: Final answer
    x = 960,286.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.