Home / 1,388,903,428.30-2,091,669,380.57-1,264,928,871.82

Finding the Fourth Proportional to 1,388,903,428.30, 2,091,669,380.57 and 1,264,928,871.82

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Solution

The fourth proportional to 1,388,903,428.30, 2,091,669,380.57 and 1,264,928,871.82 is: 1,904,965,410.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,903,428.30 : 2,091,669,380.57 = 1,264,928,871.82 : x
  2. Step 2: Convert to fraction form
    1,388,903,428.30/2,091,669,380.57 = 1,264,928,871.82/x
  3. Step 3: Cross multiply
    1,388,903,428.30x = 2,091,669,380.57 × 1,264,928,871.82
  4. Step 4: Simplify right side
    1,388,903,428.30x = 2,645,812,989,784,847,872
  5. Step 5: Solve for x
    x = 2,645,812,989,784,847,872/1,388,903,428.30
  6. Step 6: Final answer
    x = 1,904,965,410.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.