Home / 485,274,705.22-728,199,692.07-178,781,876.74

Finding the Fourth Proportional to 485,274,705.22, 728,199,692.07 and 178,781,876.74

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Solution

The fourth proportional to 485,274,705.22, 728,199,692.07 and 178,781,876.74 is: 268,278,783.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,274,705.22 : 728,199,692.07 = 178,781,876.74 : x
  2. Step 2: Convert to fraction form
    485,274,705.22/728,199,692.07 = 178,781,876.74/x
  3. Step 3: Cross multiply
    485,274,705.22x = 728,199,692.07 × 178,781,876.74
  4. Step 4: Simplify right side
    485,274,705.22x = 130,188,907,589,764,704
  5. Step 5: Solve for x
    x = 130,188,907,589,764,704/485,274,705.22
  6. Step 6: Final answer
    x = 268,278,783.52

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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.