Home / 1,638,461,708.80-2,458,542,868.80-718,431,049.60

Finding the Fourth Proportional to 1,638,461,708.80, 2,458,542,868.80 and 718,431,049.60

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Solution

The fourth proportional to 1,638,461,708.80, 2,458,542,868.80 and 718,431,049.60 is: 1,078,019,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,461,708.80 : 2,458,542,868.80 = 718,431,049.60 : x
  2. Step 2: Convert to fraction form
    1,638,461,708.80/2,458,542,868.80 = 718,431,049.60/x
  3. Step 3: Cross multiply
    1,638,461,708.80x = 2,458,542,868.80 × 718,431,049.60
  4. Step 4: Simplify right side
    1,638,461,708.80x = 1,766,293,533,718,579,200
  5. Step 5: Solve for x
    x = 1,766,293,533,718,579,200/1,638,461,708.80
  6. Step 6: Final answer
    x = 1,078,019,415.55

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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.