Home / 1,921,696.12-2,882,662.85-642,418.57

Finding the Fourth Proportional to 1,921,696.12, 2,882,662.85 and 642,418.57

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Solution

The fourth proportional to 1,921,696.12, 2,882,662.85 and 642,418.57 is: 963,667.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,696.12 : 2,882,662.85 = 642,418.57 : x
  2. Step 2: Convert to fraction form
    1,921,696.12/2,882,662.85 = 642,418.57/x
  3. Step 3: Cross multiply
    1,921,696.12x = 2,882,662.85 × 642,418.57
  4. Step 4: Simplify right side
    1,921,696.12x = 1,851,876,145,889.12
  5. Step 5: Solve for x
    x = 1,851,876,145,889.12/1,921,696.12
  6. Step 6: Final answer
    x = 963,667.53

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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.