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Finding the Fourth Proportional to 2,800,208, 4,200,312 and 805,664

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Solution

The fourth proportional to 2,800,208, 4,200,312 and 805,664 is: 1,208,496

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,208 : 4,200,312 = 805,664 : x
  2. Step 2: Convert to fraction form
    2,800,208/4,200,312 = 805,664/x
  3. Step 3: Cross multiply
    2,800,208x = 4,200,312 × 805,664
  4. Step 4: Simplify right side
    2,800,208x = 3,384,040,167,168
  5. Step 5: Solve for x
    x = 3,384,040,167,168/2,800,208
  6. Step 6: Final answer
    x = 1,208,496

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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.