Finding the Fourth Proportional to 1,390,456.20, 2,084,129.10 and 791,704.20
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Solution
The fourth proportional to 1,390,456.20, 2,084,129.10 and 791,704.20 is: 1,186,670.79
Step by Step Solution
- Step 1: Write the proportion equation
1,390,456.20 : 2,084,129.10 = 791,704.20 : x - Step 2: Convert to fraction form
1,390,456.20/2,084,129.10 = 791,704.20/x - Step 3: Cross multiply
1,390,456.20x = 2,084,129.10 × 791,704.20 - Step 4: Simplify right side
1,390,456.20x = 1,650,013,761,812.22 - Step 5: Solve for x
x = 1,650,013,761,812.22/1,390,456.20 - Step 6: Final answer
x = 1,186,670.79
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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.