Home / 824,995,208.80-1,238,037,997.22-388,420,744.81

Finding the Fourth Proportional to 824,995,208.80, 1,238,037,997.22 and 388,420,744.81

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Solution

The fourth proportional to 824,995,208.80, 1,238,037,997.22 and 388,420,744.81 is: 582,887,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,995,208.80 : 1,238,037,997.22 = 388,420,744.81 : x
  2. Step 2: Convert to fraction form
    824,995,208.80/1,238,037,997.22 = 388,420,744.81/x
  3. Step 3: Cross multiply
    824,995,208.80x = 1,238,037,997.22 × 388,420,744.81
  4. Step 4: Simplify right side
    824,995,208.80x = 480,879,640,977,396,864
  5. Step 5: Solve for x
    x = 480,879,640,977,396,864/824,995,208.80
  6. Step 6: Final answer
    x = 582,887,798.43

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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.