Home / 1,081,644.82-1,621,323.12-407,434.38

Finding the Fourth Proportional to 1,081,644.82, 1,621,323.12 and 407,434.38

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Solution

The fourth proportional to 1,081,644.82, 1,621,323.12 and 407,434.38 is: 610,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,644.82 : 1,621,323.12 = 407,434.38 : x
  2. Step 2: Convert to fraction form
    1,081,644.82/1,621,323.12 = 407,434.38/x
  3. Step 3: Cross multiply
    1,081,644.82x = 1,621,323.12 × 407,434.38
  4. Step 4: Simplify right side
    1,081,644.82x = 660,582,780,176.87
  5. Step 5: Solve for x
    x = 660,582,780,176.87/1,081,644.82
  6. Step 6: Final answer
    x = 610,720.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.