Home / 2,100,072.80-3,151,664.40-838,805.60

Finding the Fourth Proportional to 2,100,072.80, 3,151,664.40 and 838,805.60

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Solution

The fourth proportional to 2,100,072.80, 3,151,664.40 and 838,805.60 is: 1,258,829.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,072.80 : 3,151,664.40 = 838,805.60 : x
  2. Step 2: Convert to fraction form
    2,100,072.80/3,151,664.40 = 838,805.60/x
  3. Step 3: Cross multiply
    2,100,072.80x = 3,151,664.40 × 838,805.60
  4. Step 4: Simplify right side
    2,100,072.80x = 2,643,633,748,040.64
  5. Step 5: Solve for x
    x = 2,643,633,748,040.64/2,100,072.80
  6. Step 6: Final answer
    x = 1,258,829.57

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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.