Finding the Fourth Proportional to 431,569,197.80, 647,353,796.70 and 431,569,197.80
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Solution
The fourth proportional to 431,569,197.80, 647,353,796.70 and 431,569,197.80 is: 647,353,796.70
Step by Step Solution
- Step 1: Write the proportion equation
431,569,197.80 : 647,353,796.70 = 431,569,197.80 : x - Step 2: Convert to fraction form
431,569,197.80/647,353,796.70 = 431,569,197.80/x - Step 3: Cross multiply
431,569,197.80x = 647,353,796.70 × 431,569,197.80 - Step 4: Simplify right side
431,569,197.80x = 279,377,958,734,603,328 - Step 5: Solve for x
x = 279,377,958,734,603,328/431,569,197.80 - Step 6: Final answer
x = 647,353,796.70
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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.