Home / 2,137,928.51-2,949,520.39-1,220,208.64

Finding the Fourth Proportional to 2,137,928.51, 2,949,520.39 and 1,220,208.64

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Solution

The fourth proportional to 2,137,928.51, 2,949,520.39 and 1,220,208.64 is: 1,683,419.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137,928.51 : 2,949,520.39 = 1,220,208.64 : x
  2. Step 2: Convert to fraction form
    2,137,928.51/2,949,520.39 = 1,220,208.64/x
  3. Step 3: Cross multiply
    2,137,928.51x = 2,949,520.39 × 1,220,208.64
  4. Step 4: Simplify right side
    2,137,928.51x = 3,599,030,253,309.85
  5. Step 5: Solve for x
    x = 3,599,030,253,309.85/2,137,928.51
  6. Step 6: Final answer
    x = 1,683,419.36

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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.