Home / 863,405,198.47-1,190,419,370.53-720,556,618.15

Finding the Fourth Proportional to 863,405,198.47, 1,190,419,370.53 and 720,556,618.15

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Solution

The fourth proportional to 863,405,198.47, 1,190,419,370.53 and 720,556,618.15 is: 993,466,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,405,198.47 : 1,190,419,370.53 = 720,556,618.15 : x
  2. Step 2: Convert to fraction form
    863,405,198.47/1,190,419,370.53 = 720,556,618.15/x
  3. Step 3: Cross multiply
    863,405,198.47x = 1,190,419,370.53 × 720,556,618.15
  4. Step 4: Simplify right side
    863,405,198.47x = 857,764,555,809,348,480
  5. Step 5: Solve for x
    x = 857,764,555,809,348,480/863,405,198.47
  6. Step 6: Final answer
    x = 993,466,980.89

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1.5x scale

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.