Home / 1,295,389,027.20-1,943,083,540.80-640,441,138.80

Finding the Fourth Proportional to 1,295,389,027.20, 1,943,083,540.80 and 640,441,138.80

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Solution

The fourth proportional to 1,295,389,027.20, 1,943,083,540.80 and 640,441,138.80 is: 960,661,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,389,027.20 : 1,943,083,540.80 = 640,441,138.80 : x
  2. Step 2: Convert to fraction form
    1,295,389,027.20/1,943,083,540.80 = 640,441,138.80/x
  3. Step 3: Cross multiply
    1,295,389,027.20x = 1,943,083,540.80 × 640,441,138.80
  4. Step 4: Simplify right side
    1,295,389,027.20x = 1,244,430,635,653,488,128
  5. Step 5: Solve for x
    x = 1,244,430,635,653,488,128/1,295,389,027.20
  6. Step 6: Final answer
    x = 960,661,708.20

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Double scale
Find fourth proportional to 1,295,389,028.20, 1,943,083,542.30 and 640,441,139.80
Similar ratio
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1.5x scale

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.