Finding the Fourth Proportional to 3,847,970, 5,310,181.32 and 2,215,781.84
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Solution
The fourth proportional to 3,847,970, 5,310,181.32 and 2,215,781.84 is: 3,057,768.99
Step by Step Solution
- Step 1: Write the proportion equation
3,847,970 : 5,310,181.32 = 2,215,781.84 : x - Step 2: Convert to fraction form
3,847,970/5,310,181.32 = 2,215,781.84/x - Step 3: Cross multiply
3,847,970x = 5,310,181.32 × 2,215,781.84 - Step 4: Simplify right side
3,847,970x = 11,766,203,335,963.23 - Step 5: Solve for x
x = 11,766,203,335,963.23/3,847,970 - Step 6: Final answer
x = 3,057,768.99
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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.