Finding the Fourth Proportional to 620,349.24, 856,161.90 and 378,580.44
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Solution
The fourth proportional to 620,349.24, 856,161.90 and 378,580.44 is: 522,489.80
Step by Step Solution
- Step 1: Write the proportion equation
620,349.24 : 856,161.90 = 378,580.44 : x - Step 2: Convert to fraction form
620,349.24/856,161.90 = 378,580.44/x - Step 3: Cross multiply
620,349.24x = 856,161.90 × 378,580.44 - Step 4: Simplify right side
620,349.24x = 324,126,148,813.24 - Step 5: Solve for x
x = 324,126,148,813.24/620,349.24 - Step 6: Final answer
x = 522,489.80
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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.