Finding the Fourth Proportional to 3,998,716.40, 5,518,211.84 and 2,163,170.10
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Solution
The fourth proportional to 3,998,716.40, 5,518,211.84 and 2,163,170.10 is: 2,985,165.66
Step by Step Solution
- Step 1: Write the proportion equation
3,998,716.40 : 5,518,211.84 = 2,163,170.10 : x - Step 2: Convert to fraction form
3,998,716.40/5,518,211.84 = 2,163,170.10/x - Step 3: Cross multiply
3,998,716.40x = 5,518,211.84 × 2,163,170.10 - Step 4: Simplify right side
3,998,716.40x = 11,936,830,875,743.31 - Step 5: Solve for x
x = 11,936,830,875,743.31/3,998,716.40 - Step 6: Final answer
x = 2,985,165.66
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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.