Home / 5,209,998,708.85-7,189,904,653.56-2,831,289,878.25

Finding the Fourth Proportional to 5,209,998,708.85, 7,189,904,653.56 and 2,831,289,878.25

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Solution

The fourth proportional to 5,209,998,708.85, 7,189,904,653.56 and 2,831,289,878.25 is: 3,907,237,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209,998,708.85 : 7,189,904,653.56 = 2,831,289,878.25 : x
  2. Step 2: Convert to fraction form
    5,209,998,708.85/7,189,904,653.56 = 2,831,289,878.25/x
  3. Step 3: Cross multiply
    5,209,998,708.85x = 7,189,904,653.56 × 2,831,289,878.25
  4. Step 4: Simplify right side
    5,209,998,708.85x = 20,356,704,271,207,002,112
  5. Step 5: Solve for x
    x = 20,356,704,271,207,002,112/5,209,998,708.85
  6. Step 6: Final answer
    x = 3,907,237,872.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.