Home / 809,090,639.20-1,214,202,829.20-518,664,037.60

Finding the Fourth Proportional to 809,090,639.20, 1,214,202,829.20 and 518,664,037.60

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Solution

The fourth proportional to 809,090,639.20, 1,214,202,829.20 and 518,664,037.60 is: 778,359,446.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,090,639.20 : 1,214,202,829.20 = 518,664,037.60 : x
  2. Step 2: Convert to fraction form
    809,090,639.20/1,214,202,829.20 = 518,664,037.60/x
  3. Step 3: Cross multiply
    809,090,639.20x = 1,214,202,829.20 × 518,664,037.60
  4. Step 4: Simplify right side
    809,090,639.20x = 629,763,341,858,215,168
  5. Step 5: Solve for x
    x = 629,763,341,858,215,168/809,090,639.20
  6. Step 6: Final answer
    x = 778,359,446.21

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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.