Finding the Fourth Proportional to 289,620,743.70, 434,431,115.55 and 289,620,743.70
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Solution
The fourth proportional to 289,620,743.70, 434,431,115.55 and 289,620,743.70 is: 434,431,115.55
Step by Step Solution
- Step 1: Write the proportion equation
289,620,743.70 : 434,431,115.55 = 289,620,743.70 : x - Step 2: Convert to fraction form
289,620,743.70/434,431,115.55 = 289,620,743.70/x - Step 3: Cross multiply
289,620,743.70x = 434,431,115.55 × 289,620,743.70 - Step 4: Simplify right side
289,620,743.70x = 125,820,262,772,011,632 - Step 5: Solve for x
x = 125,820,262,772,011,632/289,620,743.70 - Step 6: Final answer
x = 434,431,115.55
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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.