Finding the Fourth Proportional to 521,551,736.40, 782,327,604.60 and 157,998,853.20
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Solution
The fourth proportional to 521,551,736.40, 782,327,604.60 and 157,998,853.20 is: 236,998,279.80
Step by Step Solution
- Step 1: Write the proportion equation
521,551,736.40 : 782,327,604.60 = 157,998,853.20 : x - Step 2: Convert to fraction form
521,551,736.40/782,327,604.60 = 157,998,853.20/x - Step 3: Cross multiply
521,551,736.40x = 782,327,604.60 × 157,998,853.20 - Step 4: Simplify right side
521,551,736.40x = 123,606,864,353,503,040 - Step 5: Solve for x
x = 123,606,864,353,503,040/521,551,736.40 - Step 6: Final answer
x = 236,998,279.80
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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.