Home / 680,416.30-1,020,442.11-206,974.54

Finding the Fourth Proportional to 680,416.30, 1,020,442.11 and 206,974.54

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Solution

The fourth proportional to 680,416.30, 1,020,442.11 and 206,974.54 is: 310,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,416.30 : 1,020,442.11 = 206,974.54 : x
  2. Step 2: Convert to fraction form
    680,416.30/1,020,442.11 = 206,974.54/x
  3. Step 3: Cross multiply
    680,416.30x = 1,020,442.11 × 206,974.54
  4. Step 4: Simplify right side
    680,416.30x = 211,205,536,313.88
  5. Step 5: Solve for x
    x = 211,205,536,313.88/680,416.30
  6. Step 6: Final answer
    x = 310,406.34

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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.