Finding the Fourth Proportional to 392,416,729.79, 541,534,840.36 and 216,204,723.38
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Solution
The fourth proportional to 392,416,729.79, 541,534,840.36 and 216,204,723.38 is: 298,362,382.32
Step by Step Solution
- Step 1: Write the proportion equation
392,416,729.79 : 541,534,840.36 = 216,204,723.38 : x - Step 2: Convert to fraction form
392,416,729.79/541,534,840.36 = 216,204,723.38/x - Step 3: Cross multiply
392,416,729.79x = 541,534,840.36 × 216,204,723.38 - Step 4: Simplify right side
392,416,729.79x = 117,082,390,362,694,640 - Step 5: Solve for x
x = 117,082,390,362,694,640/392,416,729.79 - Step 6: Final answer
x = 298,362,382.32
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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.