Home / 999,942,964.61-1,380,399,793.44-665,971,268.45

Finding the Fourth Proportional to 999,942,964.61, 1,380,399,793.44 and 665,971,268.45

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Solution

The fourth proportional to 999,942,964.61, 1,380,399,793.44 and 665,971,268.45 is: 919,359,037.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,942,964.61 : 1,380,399,793.44 = 665,971,268.45 : x
  2. Step 2: Convert to fraction form
    999,942,964.61/1,380,399,793.44 = 665,971,268.45/x
  3. Step 3: Cross multiply
    999,942,964.61x = 1,380,399,793.44 × 665,971,268.45
  4. Step 4: Simplify right side
    999,942,964.61x = 919,306,601,405,354,880
  5. Step 5: Solve for x
    x = 919,306,601,405,354,880/999,942,964.61
  6. Step 6: Final answer
    x = 919,359,037.41

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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.