Finding the Fourth Proportional to 431,365,811.70, 647,048,717.55 and 431,365,811.70
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Solution
The fourth proportional to 431,365,811.70, 647,048,717.55 and 431,365,811.70 is: 647,048,717.55
Step by Step Solution
- Step 1: Write the proportion equation
431,365,811.70 : 647,048,717.55 = 431,365,811.70 : x - Step 2: Convert to fraction form
431,365,811.70/647,048,717.55 = 431,365,811.70/x - Step 3: Cross multiply
431,365,811.70x = 647,048,717.55 × 431,365,811.70 - Step 4: Simplify right side
431,365,811.70x = 279,114,695,255,399,744 - Step 5: Solve for x
x = 279,114,695,255,399,744/431,365,811.70 - Step 6: Final answer
x = 647,048,717.55
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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.