Home / 1,919,722.96-2,879,288.52-640,352.80

Finding the Fourth Proportional to 1,919,722.96, 2,879,288.52 and 640,352.80

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Solution

The fourth proportional to 1,919,722.96, 2,879,288.52 and 640,352.80 is: 960,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,722.96 : 2,879,288.52 = 640,352.80 : x
  2. Step 2: Convert to fraction form
    1,919,722.96/2,879,288.52 = 640,352.80/x
  3. Step 3: Cross multiply
    1,919,722.96x = 2,879,288.52 × 640,352.80
  4. Step 4: Simplify right side
    1,919,722.96x = 1,843,760,465,789.86
  5. Step 5: Solve for x
    x = 1,843,760,465,789.86/1,919,722.96
  6. Step 6: Final answer
    x = 960,430.49

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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.