Home / 3,128,740.21-4,691,994.94-1,421,453.19

Finding the Fourth Proportional to 3,128,740.21, 4,691,994.94 and 1,421,453.19

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Solution

The fourth proportional to 3,128,740.21, 4,691,994.94 and 1,421,453.19 is: 2,131,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,740.21 : 4,691,994.94 = 1,421,453.19 : x
  2. Step 2: Convert to fraction form
    3,128,740.21/4,691,994.94 = 1,421,453.19/x
  3. Step 3: Cross multiply
    3,128,740.21x = 4,691,994.94 × 1,421,453.19
  4. Step 4: Simplify right side
    3,128,740.21x = 6,669,451,174,926.86
  5. Step 5: Solve for x
    x = 6,669,451,174,926.86/3,128,740.21
  6. Step 6: Final answer
    x = 2,131,673.05

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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.