Home / 824,995,209.31-1,238,037,997.97-388,420,745.31

Finding the Fourth Proportional to 824,995,209.31, 1,238,037,997.97 and 388,420,745.31

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Solution

The fourth proportional to 824,995,209.31, 1,238,037,997.97 and 388,420,745.31 is: 582,887,799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,995,209.31 : 1,238,037,997.97 = 388,420,745.31 : x
  2. Step 2: Convert to fraction form
    824,995,209.31/1,238,037,997.97 = 388,420,745.31/x
  3. Step 3: Cross multiply
    824,995,209.31x = 1,238,037,997.97 × 388,420,745.31
  4. Step 4: Simplify right side
    824,995,209.31x = 480,879,641,887,417,472
  5. Step 5: Solve for x
    x = 480,879,641,887,417,472/824,995,209.31
  6. Step 6: Final answer
    x = 582,887,799.18

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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.