Home / 279,936,406.90-419,904,610.35-261,796,554.10

Finding the Fourth Proportional to 279,936,406.90, 419,904,610.35 and 261,796,554.10

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Solution

The fourth proportional to 279,936,406.90, 419,904,610.35 and 261,796,554.10 is: 392,694,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,406.90 : 419,904,610.35 = 261,796,554.10 : x
  2. Step 2: Convert to fraction form
    279,936,406.90/419,904,610.35 = 261,796,554.10/x
  3. Step 3: Cross multiply
    279,936,406.90x = 419,904,610.35 × 261,796,554.10
  4. Step 4: Simplify right side
    279,936,406.90x = 109,929,580,040,333,200
  5. Step 5: Solve for x
    x = 109,929,580,040,333,200/279,936,406.90
  6. Step 6: Final answer
    x = 392,694,831.15

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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.