Home / 1,431,900.70-2,147,850.23-421,031.03

Finding the Fourth Proportional to 1,431,900.70, 2,147,850.23 and 421,031.03

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Solution

The fourth proportional to 1,431,900.70, 2,147,850.23 and 421,031.03 is: 631,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,900.70 : 2,147,850.23 = 421,031.03 : x
  2. Step 2: Convert to fraction form
    1,431,900.70/2,147,850.23 = 421,031.03/x
  3. Step 3: Cross multiply
    1,431,900.70x = 2,147,850.23 × 421,031.03
  4. Step 4: Simplify right side
    1,431,900.70x = 904,311,581,778.23
  5. Step 5: Solve for x
    x = 904,311,581,778.23/1,431,900.70
  6. Step 6: Final answer
    x = 631,546.30

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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.