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Finding the Fourth Proportional to 2,800,218, 4,200,327 and 805,674

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Solution

The fourth proportional to 2,800,218, 4,200,327 and 805,674 is: 1,208,511

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,218 : 4,200,327 = 805,674 : x
  2. Step 2: Convert to fraction form
    2,800,218/4,200,327 = 805,674/x
  3. Step 3: Cross multiply
    2,800,218x = 4,200,327 × 805,674
  4. Step 4: Simplify right side
    2,800,218x = 3,384,094,255,398
  5. Step 5: Solve for x
    x = 3,384,094,255,398/2,800,218
  6. Step 6: Final answer
    x = 1,208,511

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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.