Home / 1,990,662,664.80-2,987,486,989.20-1,020,815,061.60

Finding the Fourth Proportional to 1,990,662,664.80, 2,987,486,989.20 and 1,020,815,061.60

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Solution

The fourth proportional to 1,990,662,664.80, 2,987,486,989.20 and 1,020,815,061.60 is: 1,531,988,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,662,664.80 : 2,987,486,989.20 = 1,020,815,061.60 : x
  2. Step 2: Convert to fraction form
    1,990,662,664.80/2,987,486,989.20 = 1,020,815,061.60/x
  3. Step 3: Cross multiply
    1,990,662,664.80x = 2,987,486,989.20 × 1,020,815,061.60
  4. Step 4: Simplify right side
    1,990,662,664.80x = 3,049,671,714,909,396,480
  5. Step 5: Solve for x
    x = 3,049,671,714,909,396,480/1,990,662,664.80
  6. Step 6: Final answer
    x = 1,531,988,201.13

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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.