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Finding the Fourth Proportional to 2,800,216, 4,200,324 and 805,672

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Solution

The fourth proportional to 2,800,216, 4,200,324 and 805,672 is: 1,208,508

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,216 : 4,200,324 = 805,672 : x
  2. Step 2: Convert to fraction form
    2,800,216/4,200,324 = 805,672/x
  3. Step 3: Cross multiply
    2,800,216x = 4,200,324 × 805,672
  4. Step 4: Simplify right side
    2,800,216x = 3,384,083,437,728
  5. Step 5: Solve for x
    x = 3,384,083,437,728/2,800,216
  6. Step 6: Final answer
    x = 1,208,508

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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.