Finding the Fourth Proportional to 3,929,970.84, 5,423,304.29 and 2,211,087.26
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Solution
The fourth proportional to 3,929,970.84, 5,423,304.29 and 2,211,087.26 is: 3,051,269.20
Step by Step Solution
- Step 1: Write the proportion equation
3,929,970.84 : 5,423,304.29 = 2,211,087.26 : x - Step 2: Convert to fraction form
3,929,970.84/5,423,304.29 = 2,211,087.26/x - Step 3: Cross multiply
3,929,970.84x = 5,423,304.29 × 2,211,087.26 - Step 4: Simplify right side
3,929,970.84x = 11,991,398,984,550.39 - Step 5: Solve for x
x = 11,991,398,984,550.39/3,929,970.84 - Step 6: Final answer
x = 3,051,269.20
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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.