Home / 864,790,287.12-1,297,221,305.31-251,374,512.78

Finding the Fourth Proportional to 864,790,287.12, 1,297,221,305.31 and 251,374,512.78

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Solution

The fourth proportional to 864,790,287.12, 1,297,221,305.31 and 251,374,512.78 is: 377,072,197.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,790,287.12 : 1,297,221,305.31 = 251,374,512.78 : x
  2. Step 2: Convert to fraction form
    864,790,287.12/1,297,221,305.31 = 251,374,512.78/x
  3. Step 3: Cross multiply
    864,790,287.12x = 1,297,221,305.31 × 251,374,512.78
  4. Step 4: Simplify right side
    864,790,287.12x = 326,088,373,590,136,896
  5. Step 5: Solve for x
    x = 326,088,373,590,136,896/864,790,287.12
  6. Step 6: Final answer
    x = 377,072,197.09

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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.