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Finding the Fourth Proportional to 1,210,093.20, 1,811,203.20 and 942,404.40

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Solution

The fourth proportional to 1,210,093.20, 1,811,203.20 and 942,404.40 is: 1,410,540.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,093.20 : 1,811,203.20 = 942,404.40 : x
  2. Step 2: Convert to fraction form
    1,210,093.20/1,811,203.20 = 942,404.40/x
  3. Step 3: Cross multiply
    1,210,093.20x = 1,811,203.20 × 942,404.40
  4. Step 4: Simplify right side
    1,210,093.20x = 1,706,885,864,974.08
  5. Step 5: Solve for x
    x = 1,706,885,864,974.08/1,210,093.20
  6. Step 6: Final answer
    x = 1,410,540.83

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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.