Home / 800,390,801.28-1,199,753,832.96-309,441,273.60

Finding the Fourth Proportional to 800,390,801.28, 1,199,753,832.96 and 309,441,273.60

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Solution

The fourth proportional to 800,390,801.28, 1,199,753,832.96 and 309,441,273.60 is: 463,840,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,390,801.28 : 1,199,753,832.96 = 309,441,273.60 : x
  2. Step 2: Convert to fraction form
    800,390,801.28/1,199,753,832.96 = 309,441,273.60/x
  3. Step 3: Cross multiply
    800,390,801.28x = 1,199,753,832.96 × 309,441,273.60
  4. Step 4: Simplify right side
    800,390,801.28x = 371,253,354,077,624,128
  5. Step 5: Solve for x
    x = 371,253,354,077,624,128/800,390,801.28
  6. Step 6: Final answer
    x = 463,840,105.96

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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.