Home / 3,919,101,028.28-5,408,357,034.66-2,158,968,436.28

Finding the Fourth Proportional to 3,919,101,028.28, 5,408,357,034.66 and 2,158,968,436.28

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Solution

The fourth proportional to 3,919,101,028.28, 5,408,357,034.66 and 2,158,968,436.28 is: 2,979,375,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919,101,028.28 : 5,408,357,034.66 = 2,158,968,436.28 : x
  2. Step 2: Convert to fraction form
    3,919,101,028.28/5,408,357,034.66 = 2,158,968,436.28/x
  3. Step 3: Cross multiply
    3,919,101,028.28x = 5,408,357,034.66 × 2,158,968,436.28
  4. Step 4: Simplify right side
    3,919,101,028.28x = 11,676,472,129,963,839,488
  5. Step 5: Solve for x
    x = 11,676,472,129,963,839,488/3,919,101,028.28
  6. Step 6: Final answer
    x = 2,979,375,128.56

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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.