Home / 1,264,618,031.31-1,745,355,428.78-728,667,049.12

Finding the Fourth Proportional to 1,264,618,031.31, 1,745,355,428.78 and 728,667,049.12

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Solution

The fourth proportional to 1,264,618,031.31, 1,745,355,428.78 and 728,667,049.12 is: 1,005,665,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,618,031.31 : 1,745,355,428.78 = 728,667,049.12 : x
  2. Step 2: Convert to fraction form
    1,264,618,031.31/1,745,355,428.78 = 728,667,049.12/x
  3. Step 3: Cross multiply
    1,264,618,031.31x = 1,745,355,428.78 × 728,667,049.12
  4. Step 4: Simplify right side
    1,264,618,031.31x = 1,271,782,989,942,324,992
  5. Step 5: Solve for x
    x = 1,271,782,989,942,324,992/1,264,618,031.31
  6. Step 6: Final answer
    x = 1,005,665,709.69

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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.