Finding the Fourth Proportional to 2,079,895.51, 2,869,991.94 and 1,220,142.07
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Solution
The fourth proportional to 2,079,895.51, 2,869,991.94 and 1,220,142.07 is: 1,683,641.26
Step by Step Solution
- Step 1: Write the proportion equation
2,079,895.51 : 2,869,991.94 = 1,220,142.07 : x - Step 2: Convert to fraction form
2,079,895.51/2,869,991.94 = 1,220,142.07/x - Step 3: Cross multiply
2,079,895.51x = 2,869,991.94 × 1,220,142.07 - Step 4: Simplify right side
2,079,895.51x = 3,501,797,906,554.92 - Step 5: Solve for x
x = 3,501,797,906,554.92/2,079,895.51 - Step 6: Final answer
x = 1,683,641.26
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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.