Finding the Fourth Proportional to 1,405,259.88, 1,939,259.79 and 760,678.08
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Solution
The fourth proportional to 1,405,259.88, 1,939,259.79 and 760,678.08 is: 1,049,736.38
Step by Step Solution
- Step 1: Write the proportion equation
1,405,259.88 : 1,939,259.79 = 760,678.08 : x - Step 2: Convert to fraction form
1,405,259.88/1,939,259.79 = 760,678.08/x - Step 3: Cross multiply
1,405,259.88x = 1,939,259.79 × 760,678.08 - Step 4: Simplify right side
1,405,259.88x = 1,475,152,413,678.40 - Step 5: Solve for x
x = 1,475,152,413,678.40/1,405,259.88 - Step 6: Final answer
x = 1,049,736.38
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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.