Home / 800,809,489.20-1,201,214,233.80-628,816,810.80

Finding the Fourth Proportional to 800,809,489.20, 1,201,214,233.80 and 628,816,810.80

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Solution

The fourth proportional to 800,809,489.20, 1,201,214,233.80 and 628,816,810.80 is: 943,225,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,809,489.20 : 1,201,214,233.80 = 628,816,810.80 : x
  2. Step 2: Convert to fraction form
    800,809,489.20/1,201,214,233.80 = 628,816,810.80/x
  3. Step 3: Cross multiply
    800,809,489.20x = 1,201,214,233.80 × 628,816,810.80
  4. Step 4: Simplify right side
    800,809,489.20x = 755,343,703,585,681,536
  5. Step 5: Solve for x
    x = 755,343,703,585,681,536/800,809,489.20
  6. Step 6: Final answer
    x = 943,225,216.20

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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.