Home / 1,980,427.56-2,970,641.39-1,081,378.86

Finding the Fourth Proportional to 1,980,427.56, 2,970,641.39 and 1,081,378.86

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Solution

The fourth proportional to 1,980,427.56, 2,970,641.39 and 1,081,378.86 is: 1,622,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,427.56 : 2,970,641.39 = 1,081,378.86 : x
  2. Step 2: Convert to fraction form
    1,980,427.56/2,970,641.39 = 1,081,378.86/x
  3. Step 3: Cross multiply
    1,980,427.56x = 2,970,641.39 × 1,081,378.86
  4. Step 4: Simplify right side
    1,980,427.56x = 3,212,388,783,240.22
  5. Step 5: Solve for x
    x = 3,212,388,783,240.22/1,980,427.56
  6. Step 6: Final answer
    x = 1,622,068.31

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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.