Home / 2,189,415.15-3,021,391.80-1,222,544.88

Finding the Fourth Proportional to 2,189,415.15, 3,021,391.80 and 1,222,544.88

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Solution

The fourth proportional to 2,189,415.15, 3,021,391.80 and 1,222,544.88 is: 1,687,111.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,415.15 : 3,021,391.80 = 1,222,544.88 : x
  2. Step 2: Convert to fraction form
    2,189,415.15/3,021,391.80 = 1,222,544.88/x
  3. Step 3: Cross multiply
    2,189,415.15x = 3,021,391.80 × 1,222,544.88
  4. Step 4: Simplify right side
    2,189,415.15x = 3,693,787,075,563.98
  5. Step 5: Solve for x
    x = 3,693,787,075,563.98/2,189,415.15
  6. Step 6: Final answer
    x = 1,687,111.32

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1.5x scale

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.