Finding the Fourth Proportional to 669,163.21, 923,220.39 and 427,587.19
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Solution
The fourth proportional to 669,163.21, 923,220.39 and 427,587.19 is: 589,926.65
Step by Step Solution
- Step 1: Write the proportion equation
669,163.21 : 923,220.39 = 427,587.19 : x - Step 2: Convert to fraction form
669,163.21/923,220.39 = 427,587.19/x - Step 3: Cross multiply
669,163.21x = 923,220.39 × 427,587.19 - Step 4: Simplify right side
669,163.21x = 394,757,212,310.80 - Step 5: Solve for x
x = 394,757,212,310.80/669,163.21 - Step 6: Final answer
x = 589,926.65
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Double scale
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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.