Home / 1,508,419-2,081,657.64-820,137.16

Finding the Fourth Proportional to 1,508,419, 2,081,657.64 and 820,137.16

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Solution

The fourth proportional to 1,508,419, 2,081,657.64 and 820,137.16 is: 1,131,810.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508,419 : 2,081,657.64 = 820,137.16 : x
  2. Step 2: Convert to fraction form
    1,508,419/2,081,657.64 = 820,137.16/x
  3. Step 3: Cross multiply
    1,508,419x = 2,081,657.64 × 820,137.16
  4. Step 4: Simplify right side
    1,508,419x = 1,707,244,784,961.90
  5. Step 5: Solve for x
    x = 1,707,244,784,961.90/1,508,419
  6. Step 6: Final answer
    x = 1,131,810.71

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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.