Finding the Fourth Proportional to 1,405,385.90, 1,939,433.19 and 760,806.09
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Solution
The fourth proportional to 1,405,385.90, 1,939,433.19 and 760,806.09 is: 1,049,912.76
Step by Step Solution
- Step 1: Write the proportion equation
1,405,385.90 : 1,939,433.19 = 760,806.09 : x - Step 2: Convert to fraction form
1,405,385.90/1,939,433.19 = 760,806.09/x - Step 3: Cross multiply
1,405,385.90x = 1,939,433.19 × 760,806.09 - Step 4: Simplify right side
1,405,385.90x = 1,475,532,582,100.13 - Step 5: Solve for x
x = 1,475,532,582,100.13/1,405,385.90 - Step 6: Final answer
x = 1,049,912.76
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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.