Home / 3,918,055.42-5,406,620-2,198,843.78

Finding the Fourth Proportional to 3,918,055.42, 5,406,620 and 2,198,843.78

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Solution

The fourth proportional to 3,918,055.42, 5,406,620 and 2,198,843.78 is: 3,034,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918,055.42 : 5,406,620 = 2,198,843.78 : x
  2. Step 2: Convert to fraction form
    3,918,055.42/5,406,620 = 2,198,843.78/x
  3. Step 3: Cross multiply
    3,918,055.42x = 5,406,620 × 2,198,843.78
  4. Step 4: Simplify right side
    3,918,055.42x = 11,888,312,757,823.60
  5. Step 5: Solve for x
    x = 11,888,312,757,823.60/3,918,055.42
  6. Step 6: Final answer
    x = 3,034,238.03

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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.