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Finding the Fourth Proportional to 2,799,208.16, 4,199,478.56 and 905,949.60

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Solution

The fourth proportional to 2,799,208.16, 4,199,478.56 and 905,949.60 is: 1,359,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799,208.16 : 4,199,478.56 = 905,949.60 : x
  2. Step 2: Convert to fraction form
    2,799,208.16/4,199,478.56 = 905,949.60/x
  3. Step 3: Cross multiply
    2,799,208.16x = 4,199,478.56 × 905,949.60
  4. Step 4: Simplify right side
    2,799,208.16x = 3,804,515,921,640.58
  5. Step 5: Solve for x
    x = 3,804,515,921,640.58/2,799,208.16
  6. Step 6: Final answer
    x = 1,359,140.05

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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.