Home / 1,189,621.49-1,641,633.21-645,745.64

Finding the Fourth Proportional to 1,189,621.49, 1,641,633.21 and 645,745.64

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Solution

The fourth proportional to 1,189,621.49, 1,641,633.21 and 645,745.64 is: 891,104.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,621.49 : 1,641,633.21 = 645,745.64 : x
  2. Step 2: Convert to fraction form
    1,189,621.49/1,641,633.21 = 645,745.64/x
  3. Step 3: Cross multiply
    1,189,621.49x = 1,641,633.21 × 645,745.64
  4. Step 4: Simplify right side
    1,189,621.49x = 1,060,077,479,628.54
  5. Step 5: Solve for x
    x = 1,060,077,479,628.54/1,189,621.49
  6. Step 6: Final answer
    x = 891,104.85

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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.