Home / 878,991,998.40-1,318,697,949.60-265,582,238.40

Finding the Fourth Proportional to 878,991,998.40, 1,318,697,949.60 and 265,582,238.40

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Solution

The fourth proportional to 878,991,998.40, 1,318,697,949.60 and 265,582,238.40 is: 398,436,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,991,998.40 : 1,318,697,949.60 = 265,582,238.40 : x
  2. Step 2: Convert to fraction form
    878,991,998.40/1,318,697,949.60 = 265,582,238.40/x
  3. Step 3: Cross multiply
    878,991,998.40x = 1,318,697,949.60 × 265,582,238.40
  4. Step 4: Simplify right side
    878,991,998.40x = 350,222,753,228,258,368
  5. Step 5: Solve for x
    x = 350,222,753,228,258,368/878,991,998.40
  6. Step 6: Final answer
    x = 398,436,793.36

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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.