Finding the Fourth Proportional to 418,742.70, 628,114.05 and 399,497.10
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Solution
The fourth proportional to 418,742.70, 628,114.05 and 399,497.10 is: 599,245.65
Step by Step Solution
- Step 1: Write the proportion equation
418,742.70 : 628,114.05 = 399,497.10 : x - Step 2: Convert to fraction form
418,742.70/628,114.05 = 399,497.10/x - Step 3: Cross multiply
418,742.70x = 628,114.05 × 399,497.10 - Step 4: Simplify right side
418,742.70x = 250,929,741,444.26 - Step 5: Solve for x
x = 250,929,741,444.26/418,742.70 - Step 6: Final answer
x = 599,245.65
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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.