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Finding the Fourth Proportional to 620,000.25, 855,571.21 and 344,375.98

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Solution

The fourth proportional to 620,000.25, 855,571.21 and 344,375.98 is: 475,222.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,000.25 : 855,571.21 = 344,375.98 : x
  2. Step 2: Convert to fraction form
    620,000.25/855,571.21 = 344,375.98/x
  3. Step 3: Cross multiply
    620,000.25x = 855,571.21 × 344,375.98
  4. Step 4: Simplify right side
    620,000.25x = 294,638,173,309.96
  5. Step 5: Solve for x
    x = 294,638,173,309.96/620,000.25
  6. Step 6: Final answer
    x = 475,222.67

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1.5x scale

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.