Home / 1,638,461,671.80-2,458,542,813.30-718,431,012.60

Finding the Fourth Proportional to 1,638,461,671.80, 2,458,542,813.30 and 718,431,012.60

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Solution

The fourth proportional to 1,638,461,671.80, 2,458,542,813.30 and 718,431,012.60 is: 1,078,019,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,461,671.80 : 2,458,542,813.30 = 718,431,012.60 : x
  2. Step 2: Convert to fraction form
    1,638,461,671.80/2,458,542,813.30 = 718,431,012.60/x
  3. Step 3: Cross multiply
    1,638,461,671.80x = 2,458,542,813.30 × 718,431,012.60
  4. Step 4: Simplify right side
    1,638,461,671.80x = 1,766,293,402,879,571,968
  5. Step 5: Solve for x
    x = 1,766,293,402,879,571,968/1,638,461,671.80
  6. Step 6: Final answer
    x = 1,078,019,360.04

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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.