Finding the Fourth Proportional to 3,422,331.75, 5,138,544.13 and 1,908,971.49
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Solution
The fourth proportional to 3,422,331.75, 5,138,544.13 and 1,908,971.49 is: 2,866,272.17
Step by Step Solution
- Step 1: Write the proportion equation
3,422,331.75 : 5,138,544.13 = 1,908,971.49 : x - Step 2: Convert to fraction form
3,422,331.75/5,138,544.13 = 1,908,971.49/x - Step 3: Cross multiply
3,422,331.75x = 5,138,544.13 × 1,908,971.49 - Step 4: Simplify right side
3,422,331.75x = 9,809,334,244,276.85 - Step 5: Solve for x
x = 9,809,334,244,276.85/3,422,331.75 - Step 6: Final answer
x = 2,866,272.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.