Finding the Fourth Proportional to 472,392,692.70, 659,819,219.70 and 472,392,692.70
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Solution
The fourth proportional to 472,392,692.70, 659,819,219.70 and 472,392,692.70 is: 659,819,219.70
Step by Step Solution
- Step 1: Write the proportion equation
472,392,692.70 : 659,819,219.70 = 472,392,692.70 : x - Step 2: Convert to fraction form
472,392,692.70/659,819,219.70 = 472,392,692.70/x - Step 3: Cross multiply
472,392,692.70x = 659,819,219.70 × 472,392,692.70 - Step 4: Simplify right side
472,392,692.70x = 311,693,777,889,295,872 - Step 5: Solve for x
x = 311,693,777,889,295,872/472,392,692.70 - Step 6: Final answer
x = 659,819,219.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.