Finding the Fourth Proportional to 2,154,157.32, 2,972,722.20 and 1,187,288.12
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Solution
The fourth proportional to 2,154,157.32, 2,972,722.20 and 1,187,288.12 is: 1,638,449.39
Step by Step Solution
- Step 1: Write the proportion equation
2,154,157.32 : 2,972,722.20 = 1,187,288.12 : x - Step 2: Convert to fraction form
2,154,157.32/2,972,722.20 = 1,187,288.12/x - Step 3: Cross multiply
2,154,157.32x = 2,972,722.20 × 1,187,288.12 - Step 4: Simplify right side
2,154,157.32x = 3,529,477,752,120.26 - Step 5: Solve for x
x = 3,529,477,752,120.26/2,154,157.32 - Step 6: Final answer
x = 1,638,449.39
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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.