Finding the Fourth Proportional to 641,921.05, 885,840.23 and 355,434.99
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Solution
The fourth proportional to 641,921.05, 885,840.23 and 355,434.99 is: 490,494.29
Step by Step Solution
- Step 1: Write the proportion equation
641,921.05 : 885,840.23 = 355,434.99 : x - Step 2: Convert to fraction form
641,921.05/885,840.23 = 355,434.99/x - Step 3: Cross multiply
641,921.05x = 885,840.23 × 355,434.99 - Step 4: Simplify right side
641,921.05x = 314,858,610,858.33 - Step 5: Solve for x
x = 314,858,610,858.33/641,921.05 - Step 6: Final answer
x = 490,494.29
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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.