Home / 3,918,870.42-5,407,742.55-2,199,658.74

Finding the Fourth Proportional to 3,918,870.42, 5,407,742.55 and 2,199,658.74

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Solution

The fourth proportional to 3,918,870.42, 5,407,742.55 and 2,199,658.74 is: 3,035,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918,870.42 : 5,407,742.55 = 2,199,658.74 : x
  2. Step 2: Convert to fraction form
    3,918,870.42/5,407,742.55 = 2,199,658.74/x
  3. Step 3: Cross multiply
    3,918,870.42x = 5,407,742.55 × 2,199,658.74
  4. Step 4: Simplify right side
    3,918,870.42x = 11,895,188,163,777.39
  5. Step 5: Solve for x
    x = 11,895,188,163,777.39/3,918,870.42
  6. Step 6: Final answer
    x = 3,035,361.44

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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.