Finding the Fourth Proportional to 641,933.68, 885,857.65 and 355,447.62
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Solution
The fourth proportional to 641,933.68, 885,857.65 and 355,447.62 is: 490,511.72
Step by Step Solution
- Step 1: Write the proportion equation
641,933.68 : 885,857.65 = 355,447.62 : x - Step 2: Convert to fraction form
641,933.68/885,857.65 = 355,447.62/x - Step 3: Cross multiply
641,933.68x = 885,857.65 × 355,447.62 - Step 4: Simplify right side
641,933.68x = 314,875,993,351.29 - Step 5: Solve for x
x = 314,875,993,351.29/641,933.68 - Step 6: Final answer
x = 490,511.72
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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.