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Finding the Fourth Proportional to 818,997.78, 1,228,595.09 and 774,208.02

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Solution

The fourth proportional to 818,997.78, 1,228,595.09 and 774,208.02 is: 1,161,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,997.78 : 1,228,595.09 = 774,208.02 : x
  2. Step 2: Convert to fraction form
    818,997.78/1,228,595.09 = 774,208.02/x
  3. Step 3: Cross multiply
    818,997.78x = 1,228,595.09 × 774,208.02
  4. Step 4: Simplify right side
    818,997.78x = 951,188,168,139.58
  5. Step 5: Solve for x
    x = 951,188,168,139.58/818,997.78
  6. Step 6: Final answer
    x = 1,161,405.06

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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.