Finding the Fourth Proportional to 641,860.62, 885,795.34 and 355,380.70
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Solution
The fourth proportional to 641,860.62, 885,795.34 and 355,380.70 is: 490,440.69
Step by Step Solution
- Step 1: Write the proportion equation
641,860.62 : 885,795.34 = 355,380.70 : x - Step 2: Convert to fraction form
641,860.62/885,795.34 = 355,380.70/x - Step 3: Cross multiply
641,860.62x = 885,795.34 × 355,380.70 - Step 4: Simplify right side
641,860.62x = 314,794,567,985.94 - Step 5: Solve for x
x = 314,794,567,985.94/641,860.62 - Step 6: Final answer
x = 490,440.69
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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.