Home / 1,407,940.32-1,941,078-1,118,512.20

Finding the Fourth Proportional to 1,407,940.32, 1,941,078 and 1,118,512.20

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Solution

The fourth proportional to 1,407,940.32, 1,941,078 and 1,118,512.20 is: 1,542,053.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,940.32 : 1,941,078 = 1,118,512.20 : x
  2. Step 2: Convert to fraction form
    1,407,940.32/1,941,078 = 1,118,512.20/x
  3. Step 3: Cross multiply
    1,407,940.32x = 1,941,078 × 1,118,512.20
  4. Step 4: Simplify right side
    1,407,940.32x = 2,171,119,424,151.60
  5. Step 5: Solve for x
    x = 2,171,119,424,151.60/1,407,940.32
  6. Step 6: Final answer
    x = 1,542,053.59

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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.