Home / 1,325,509,109.88-1,987,944,800.16-405,393,420.12

Finding the Fourth Proportional to 1,325,509,109.88, 1,987,944,800.16 and 405,393,420.12

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Solution

The fourth proportional to 1,325,509,109.88, 1,987,944,800.16 and 405,393,420.12 is: 607,992,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,509,109.88 : 1,987,944,800.16 = 405,393,420.12 : x
  2. Step 2: Convert to fraction form
    1,325,509,109.88/1,987,944,800.16 = 405,393,420.12/x
  3. Step 3: Cross multiply
    1,325,509,109.88x = 1,987,944,800.16 × 405,393,420.12
  4. Step 4: Simplify right side
    1,325,509,109.88x = 805,899,741,546,632,320
  5. Step 5: Solve for x
    x = 805,899,741,546,632,320/1,325,509,109.88
  6. Step 6: Final answer
    x = 607,992,608.68

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Double scale
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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.