Home / 2,188,905.12-3,020,691.69-1,222,034.85

Finding the Fourth Proportional to 2,188,905.12, 3,020,691.69 and 1,222,034.85

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Solution

The fourth proportional to 2,188,905.12, 3,020,691.69 and 1,222,034.85 is: 1,686,409.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,905.12 : 3,020,691.69 = 1,222,034.85 : x
  2. Step 2: Convert to fraction form
    2,188,905.12/3,020,691.69 = 1,222,034.85/x
  3. Step 3: Cross multiply
    2,188,905.12x = 3,020,691.69 × 1,222,034.85
  4. Step 4: Simplify right side
    2,188,905.12x = 3,691,390,516,285.40
  5. Step 5: Solve for x
    x = 3,691,390,516,285.40/2,188,905.12
  6. Step 6: Final answer
    x = 1,686,409.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.