Finding the Fourth Proportional to 1,392,699.42, 2,089,049.13 and 919,274.06
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Solution
The fourth proportional to 1,392,699.42, 2,089,049.13 and 919,274.06 is: 1,378,911.09
Step by Step Solution
- Step 1: Write the proportion equation
1,392,699.42 : 2,089,049.13 = 919,274.06 : x - Step 2: Convert to fraction form
1,392,699.42/2,089,049.13 = 919,274.06/x - Step 3: Cross multiply
1,392,699.42x = 2,089,049.13 × 919,274.06 - Step 4: Simplify right side
1,392,699.42x = 1,920,408,680,497.19 - Step 5: Solve for x
x = 1,920,408,680,497.19/1,392,699.42 - Step 6: Final answer
x = 1,378,911.09
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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.