Finding the Fourth Proportional to 490,187,348.99, 676,482,472.64 and 275,673,493.63
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Solution
The fourth proportional to 490,187,348.99, 676,482,472.64 and 275,673,493.63 is: 380,442,879.64
Step by Step Solution
- Step 1: Write the proportion equation
490,187,348.99 : 676,482,472.64 = 275,673,493.63 : x - Step 2: Convert to fraction form
490,187,348.99/676,482,472.64 = 275,673,493.63/x - Step 3: Cross multiply
490,187,348.99x = 676,482,472.64 × 275,673,493.63 - Step 4: Simplify right side
490,187,348.99x = 186,488,286,612,892,608 - Step 5: Solve for x
x = 186,488,286,612,892,608/490,187,348.99 - Step 6: Final answer
x = 380,442,879.64
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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.