Finding the Fourth Proportional to 641,922.36, 885,781.33 and 355,370.68
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Solution
The fourth proportional to 641,922.36, 885,781.33 and 355,370.68 is: 490,371.94
Step by Step Solution
- Step 1: Write the proportion equation
641,922.36 : 885,781.33 = 355,370.68 : x - Step 2: Convert to fraction form
641,922.36/885,781.33 = 355,370.68/x - Step 3: Cross multiply
641,922.36x = 885,781.33 × 355,370.68 - Step 4: Simplify right side
641,922.36x = 314,780,713,573.40 - Step 5: Solve for x
x = 314,780,713,573.40/641,922.36 - Step 6: Final answer
x = 490,371.94
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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.