Finding the Fourth Proportional to 1,405,383.90, 1,939,430.43 and 760,804.09
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Solution
The fourth proportional to 1,405,383.90, 1,939,430.43 and 760,804.09 is: 1,049,909.99
Step by Step Solution
- Step 1: Write the proportion equation
1,405,383.90 : 1,939,430.43 = 760,804.09 : x - Step 2: Convert to fraction form
1,405,383.90/1,939,430.43 = 760,804.09/x - Step 3: Cross multiply
1,405,383.90x = 1,939,430.43 × 760,804.09 - Step 4: Simplify right side
1,405,383.90x = 1,475,526,603,414.46 - Step 5: Solve for x
x = 1,475,526,603,414.46/1,405,383.90 - Step 6: Final answer
x = 1,049,909.99
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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.