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Finding the Fourth Proportional to 620,003.88, 855,576.21 and 344,379.61

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Solution

The fourth proportional to 620,003.88, 855,576.21 and 344,379.61 is: 475,227.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,003.88 : 855,576.21 = 344,379.61 : x
  2. Step 2: Convert to fraction form
    620,003.88/855,576.21 = 344,379.61/x
  3. Step 3: Cross multiply
    620,003.88x = 855,576.21 × 344,379.61
  4. Step 4: Simplify right side
    620,003.88x = 294,643,001,525.08
  5. Step 5: Solve for x
    x = 294,643,001,525.08/620,003.88
  6. Step 6: Final answer
    x = 475,227.67

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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.