Finding the Fourth Proportional to 621,674,729.06, 858,298,301.80 and 395,741,192.63
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Solution
The fourth proportional to 621,674,729.06, 858,298,301.80 and 395,741,192.63 is: 546,369,311.32
Step by Step Solution
- Step 1: Write the proportion equation
621,674,729.06 : 858,298,301.80 = 395,741,192.63 : x - Step 2: Convert to fraction form
621,674,729.06/858,298,301.80 = 395,741,192.63/x - Step 3: Cross multiply
621,674,729.06x = 858,298,301.80 × 395,741,192.63 - Step 4: Simplify right side
621,674,729.06x = 339,663,993,581,354,816 - Step 5: Solve for x
x = 339,663,993,581,354,816/621,674,729.06 - Step 6: Final answer
x = 546,369,311.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.