Finding the Fourth Proportional to 3,958,971.20, 5,463,443.76 and 2,148,135.20
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Solution
The fourth proportional to 3,958,971.20, 5,463,443.76 and 2,148,135.20 is: 2,964,461.03
Step by Step Solution
- Step 1: Write the proportion equation
3,958,971.20 : 5,463,443.76 = 2,148,135.20 : x - Step 2: Convert to fraction form
3,958,971.20/5,463,443.76 = 2,148,135.20/x - Step 3: Cross multiply
3,958,971.20x = 5,463,443.76 × 2,148,135.20 - Step 4: Simplify right side
3,958,971.20x = 11,736,215,854,076.35 - Step 5: Solve for x
x = 11,736,215,854,076.35/3,958,971.20 - Step 6: Final answer
x = 2,964,461.03
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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.