Finding the Fourth Proportional to 490,416.30, 676,794.42 and 275,555.70
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Solution
The fourth proportional to 490,416.30, 676,794.42 and 275,555.70 is: 380,278.06
Step by Step Solution
- Step 1: Write the proportion equation
490,416.30 : 676,794.42 = 275,555.70 : x - Step 2: Convert to fraction form
490,416.30/676,794.42 = 275,555.70/x - Step 3: Cross multiply
490,416.30x = 676,794.42 × 275,555.70 - Step 4: Simplify right side
490,416.30x = 186,494,560,159.19 - Step 5: Solve for x
x = 186,494,560,159.19/490,416.30 - Step 6: Final answer
x = 380,278.06
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1.5x scale
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.