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Finding the Fourth Proportional to 1,213,974.92, 1,819,777.75 and 787,247.48

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Solution

The fourth proportional to 1,213,974.92, 1,819,777.75 and 787,247.48 is: 1,180,103.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,974.92 : 1,819,777.75 = 787,247.48 : x
  2. Step 2: Convert to fraction form
    1,213,974.92/1,819,777.75 = 787,247.48/x
  3. Step 3: Cross multiply
    1,213,974.92x = 1,819,777.75 × 787,247.48
  4. Step 4: Simplify right side
    1,213,974.92x = 1,432,615,436,780.56
  5. Step 5: Solve for x
    x = 1,432,615,436,780.56/1,213,974.92
  6. Step 6: Final answer
    x = 1,180,103.00

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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.