Finding the Fourth Proportional to 478,702,022.70, 718,053,034.05 and 418,235,846.70
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Solution
The fourth proportional to 478,702,022.70, 718,053,034.05 and 418,235,846.70 is: 627,353,770.05
Step by Step Solution
- Step 1: Write the proportion equation
478,702,022.70 : 718,053,034.05 = 418,235,846.70 : x - Step 2: Convert to fraction form
478,702,022.70/718,053,034.05 = 418,235,846.70/x - Step 3: Cross multiply
478,702,022.70x = 718,053,034.05 × 418,235,846.70 - Step 4: Simplify right side
478,702,022.70x = 300,315,518,671,405,632 - Step 5: Solve for x
x = 300,315,518,671,405,632/478,702,022.70 - Step 6: Final answer
x = 627,353,770.05
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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.