Home / 839,810,080.80-1,259,715,121.20-809,199,079.20

Finding the Fourth Proportional to 839,810,080.80, 1,259,715,121.20 and 809,199,079.20

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Solution

The fourth proportional to 839,810,080.80, 1,259,715,121.20 and 809,199,079.20 is: 1,213,798,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,810,080.80 : 1,259,715,121.20 = 809,199,079.20 : x
  2. Step 2: Convert to fraction form
    839,810,080.80/1,259,715,121.20 = 809,199,079.20/x
  3. Step 3: Cross multiply
    839,810,080.80x = 1,259,715,121.20 × 809,199,079.20
  4. Step 4: Simplify right side
    839,810,080.80x = 1,019,360,316,129,356,544
  5. Step 5: Solve for x
    x = 1,019,360,316,129,356,544/839,810,080.80
  6. Step 6: Final answer
    x = 1,213,798,618.80

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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.