Home / 839,810,406.80-1,259,715,610.20-430,907,891.60

Finding the Fourth Proportional to 839,810,406.80, 1,259,715,610.20 and 430,907,891.60

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Solution

The fourth proportional to 839,810,406.80, 1,259,715,610.20 and 430,907,891.60 is: 646,361,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,810,406.80 : 1,259,715,610.20 = 430,907,891.60 : x
  2. Step 2: Convert to fraction form
    839,810,406.80/1,259,715,610.20 = 430,907,891.60/x
  3. Step 3: Cross multiply
    839,810,406.80x = 1,259,715,610.20 × 430,907,891.60
  4. Step 4: Simplify right side
    839,810,406.80x = 542,821,397,606,889,536
  5. Step 5: Solve for x
    x = 542,821,397,606,889,536/839,810,406.80
  6. Step 6: Final answer
    x = 646,361,837.40

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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.