Home / 660,528,239.20-990,540,416.40-200,313,455.20

Finding the Fourth Proportional to 660,528,239.20, 990,540,416.40 and 200,313,455.20

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Solution

The fourth proportional to 660,528,239.20, 990,540,416.40 and 200,313,455.20 is: 300,393,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,528,239.20 : 990,540,416.40 = 200,313,455.20 : x
  2. Step 2: Convert to fraction form
    660,528,239.20/990,540,416.40 = 200,313,455.20/x
  3. Step 3: Cross multiply
    660,528,239.20x = 990,540,416.40 × 200,313,455.20
  4. Step 4: Simplify right side
    660,528,239.20x = 198,418,573,324,330,720
  5. Step 5: Solve for x
    x = 198,418,573,324,330,720/660,528,239.20
  6. Step 6: Final answer
    x = 300,393,778.11

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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.