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Finding the Fourth Proportional to 2,800,206, 4,200,309 and 805,662

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Solution

The fourth proportional to 2,800,206, 4,200,309 and 805,662 is: 1,208,493

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,206 : 4,200,309 = 805,662 : x
  2. Step 2: Convert to fraction form
    2,800,206/4,200,309 = 805,662/x
  3. Step 3: Cross multiply
    2,800,206x = 4,200,309 × 805,662
  4. Step 4: Simplify right side
    2,800,206x = 3,384,029,349,558
  5. Step 5: Solve for x
    x = 3,384,029,349,558/2,800,206
  6. Step 6: Final answer
    x = 1,208,493

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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.