Home / 821,184,078.12-1,231,515,711.09-268,361,435.22

Finding the Fourth Proportional to 821,184,078.12, 1,231,515,711.09 and 268,361,435.22

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Solution

The fourth proportional to 821,184,078.12, 1,231,515,711.09 and 268,361,435.22 is: 402,457,052.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,184,078.12 : 1,231,515,711.09 = 268,361,435.22 : x
  2. Step 2: Convert to fraction form
    821,184,078.12/1,231,515,711.09 = 268,361,435.22/x
  3. Step 3: Cross multiply
    821,184,078.12x = 1,231,515,711.09 × 268,361,435.22
  4. Step 4: Simplify right side
    821,184,078.12x = 330,491,323,724,091,264
  5. Step 5: Solve for x
    x = 330,491,323,724,091,264/821,184,078.12
  6. Step 6: Final answer
    x = 402,457,052.60

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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.