Finding the Fourth Proportional to 762,912,102.70, 1,144,368,154.05 and 394,446,342.70
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Solution
The fourth proportional to 762,912,102.70, 1,144,368,154.05 and 394,446,342.70 is: 591,669,514.05
Step by Step Solution
- Step 1: Write the proportion equation
762,912,102.70 : 1,144,368,154.05 = 394,446,342.70 : x - Step 2: Convert to fraction form
762,912,102.70/1,144,368,154.05 = 394,446,342.70/x - Step 3: Cross multiply
762,912,102.70x = 1,144,368,154.05 × 394,446,342.70 - Step 4: Simplify right side
762,912,102.70x = 451,391,833,067,372,672 - Step 5: Solve for x
x = 451,391,833,067,372,672/762,912,102.70 - Step 6: Final answer
x = 591,669,514.05
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.