Home / 821,184,079.12-1,231,515,712.59-268,361,436.22

Finding the Fourth Proportional to 821,184,079.12, 1,231,515,712.59 and 268,361,436.22

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Solution

The fourth proportional to 821,184,079.12, 1,231,515,712.59 and 268,361,436.22 is: 402,457,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,184,079.12 : 1,231,515,712.59 = 268,361,436.22 : x
  2. Step 2: Convert to fraction form
    821,184,079.12/1,231,515,712.59 = 268,361,436.22/x
  3. Step 3: Cross multiply
    821,184,079.12x = 1,231,515,712.59 × 268,361,436.22
  4. Step 4: Simplify right side
    821,184,079.12x = 330,491,325,358,149,120
  5. Step 5: Solve for x
    x = 330,491,325,358,149,120/821,184,079.12
  6. Step 6: Final answer
    x = 402,457,054.10

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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.