Home / 421,040.28-631,706.22-263,080.56

Finding the Fourth Proportional to 421,040.28, 631,706.22 and 263,080.56

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Solution

The fourth proportional to 421,040.28, 631,706.22 and 263,080.56 is: 394,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,040.28 : 631,706.22 = 263,080.56 : x
  2. Step 2: Convert to fraction form
    421,040.28/631,706.22 = 263,080.56/x
  3. Step 3: Cross multiply
    421,040.28x = 631,706.22 × 263,080.56
  4. Step 4: Simplify right side
    421,040.28x = 166,189,626,113.08
  5. Step 5: Solve for x
    x = 166,189,626,113.08/421,040.28
  6. Step 6: Final answer
    x = 394,711.94

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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.