Finding the Fourth Proportional to 3,899,664.64, 5,381,313.92 and 2,157,230.08
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Solution
The fourth proportional to 3,899,664.64, 5,381,313.92 and 2,157,230.08 is: 2,976,853.99
Step by Step Solution
- Step 1: Write the proportion equation
3,899,664.64 : 5,381,313.92 = 2,157,230.08 : x - Step 2: Convert to fraction form
3,899,664.64/5,381,313.92 = 2,157,230.08/x - Step 3: Cross multiply
3,899,664.64x = 5,381,313.92 × 2,157,230.08 - Step 4: Simplify right side
3,899,664.64x = 11,608,732,258,146.71 - Step 5: Solve for x
x = 11,608,732,258,146.71/3,899,664.64 - Step 6: Final answer
x = 2,976,853.99
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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.