Finding the Fourth Proportional to 812,592,409.80, 1,218,888,614.70 and 505,726,566.60
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Solution
The fourth proportional to 812,592,409.80, 1,218,888,614.70 and 505,726,566.60 is: 758,589,849.90
Step by Step Solution
- Step 1: Write the proportion equation
812,592,409.80 : 1,218,888,614.70 = 505,726,566.60 : x - Step 2: Convert to fraction form
812,592,409.80/1,218,888,614.70 = 505,726,566.60/x - Step 3: Cross multiply
812,592,409.80x = 1,218,888,614.70 × 505,726,566.60 - Step 4: Simplify right side
812,592,409.80x = 616,424,354,180,061,312 - Step 5: Solve for x
x = 616,424,354,180,061,312/812,592,409.80 - Step 6: Final answer
x = 758,589,849.90
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Similar ratio
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1.5x scale
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.