Finding the Fourth Proportional to 3,420,975.35, 4,720,947.81 and 1,872,236.12
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Solution
The fourth proportional to 3,420,975.35, 4,720,947.81 and 1,872,236.12 is: 2,583,686.84
Step by Step Solution
- Step 1: Write the proportion equation
3,420,975.35 : 4,720,947.81 = 1,872,236.12 : x - Step 2: Convert to fraction form
3,420,975.35/4,720,947.81 = 1,872,236.12/x - Step 3: Cross multiply
3,420,975.35x = 4,720,947.81 × 1,872,236.12 - Step 4: Simplify right side
3,420,975.35x = 8,838,728,986,912.16 - Step 5: Solve for x
x = 8,838,728,986,912.16/3,420,975.35 - Step 6: Final answer
x = 2,583,686.84
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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.