Home / 660,502,481.40-990,753,722.10-200,439,912.60

Finding the Fourth Proportional to 660,502,481.40, 990,753,722.10 and 200,439,912.60

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Solution

The fourth proportional to 660,502,481.40, 990,753,722.10 and 200,439,912.60 is: 300,659,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,502,481.40 : 990,753,722.10 = 200,439,912.60 : x
  2. Step 2: Convert to fraction form
    660,502,481.40/990,753,722.10 = 200,439,912.60/x
  3. Step 3: Cross multiply
    660,502,481.40x = 990,753,722.10 × 200,439,912.60
  4. Step 4: Simplify right side
    660,502,481.40x = 198,586,589,465,848,672
  5. Step 5: Solve for x
    x = 198,586,589,465,848,672/660,502,481.40
  6. Step 6: Final answer
    x = 300,659,868.90

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1.5x scale

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.