Finding the Fourth Proportional to 347,646,422.05, 521,469,820.35 and 129,268,388.78
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Solution
The fourth proportional to 347,646,422.05, 521,469,820.35 and 129,268,388.78 is: 193,902,652.80
Step by Step Solution
- Step 1: Write the proportion equation
347,646,422.05 : 521,469,820.35 = 129,268,388.78 : x - Step 2: Convert to fraction form
347,646,422.05/521,469,820.35 = 129,268,388.78/x - Step 3: Cross multiply
347,646,422.05x = 521,469,820.35 × 129,268,388.78 - Step 4: Simplify right side
347,646,422.05x = 67,409,563,470,786,872 - Step 5: Solve for x
x = 67,409,563,470,786,872/347,646,422.05 - Step 6: Final answer
x = 193,902,652.80
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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.