Home / 681,447,101.60-1,022,170,652.40-221,400,279.20

Finding the Fourth Proportional to 681,447,101.60, 1,022,170,652.40 and 221,400,279.20

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Solution

The fourth proportional to 681,447,101.60, 1,022,170,652.40 and 221,400,279.20 is: 332,100,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,447,101.60 : 1,022,170,652.40 = 221,400,279.20 : x
  2. Step 2: Convert to fraction form
    681,447,101.60/1,022,170,652.40 = 221,400,279.20/x
  3. Step 3: Cross multiply
    681,447,101.60x = 1,022,170,652.40 × 221,400,279.20
  4. Step 4: Simplify right side
    681,447,101.60x = 226,308,867,831,406,144
  5. Step 5: Solve for x
    x = 226,308,867,831,406,144/681,447,101.60
  6. Step 6: Final answer
    x = 332,100,418.80

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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.