Home / 990,767,991.60-1,486,151,987.40-664,250,641.20

Finding the Fourth Proportional to 990,767,991.60, 1,486,151,987.40 and 664,250,641.20

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Solution

The fourth proportional to 990,767,991.60, 1,486,151,987.40 and 664,250,641.20 is: 996,375,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,767,991.60 : 1,486,151,987.40 = 664,250,641.20 : x
  2. Step 2: Convert to fraction form
    990,767,991.60/1,486,151,987.40 = 664,250,641.20/x
  3. Step 3: Cross multiply
    990,767,991.60x = 1,486,151,987.40 × 664,250,641.20
  4. Step 4: Simplify right side
    990,767,991.60x = 987,177,410,551,104,512
  5. Step 5: Solve for x
    x = 987,177,410,551,104,512/990,767,991.60
  6. Step 6: Final answer
    x = 996,375,961.80

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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.