Home / 911,839,003.05-1,258,338,900.39-494,151,288.36

Finding the Fourth Proportional to 911,839,003.05, 1,258,338,900.39 and 494,151,288.36

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Solution

The fourth proportional to 911,839,003.05, 1,258,338,900.39 and 494,151,288.36 is: 681,929,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,839,003.05 : 1,258,338,900.39 = 494,151,288.36 : x
  2. Step 2: Convert to fraction form
    911,839,003.05/1,258,338,900.39 = 494,151,288.36/x
  3. Step 3: Cross multiply
    911,839,003.05x = 1,258,338,900.39 × 494,151,288.36
  4. Step 4: Simplify right side
    911,839,003.05x = 621,809,788,821,224,320
  5. Step 5: Solve for x
    x = 621,809,788,821,224,320/911,839,003.05
  6. Step 6: Final answer
    x = 681,929,361.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.