Finding the Fourth Proportional to 3,949,515.18, 5,450,329.62 and 2,138,679.18
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Solution
The fourth proportional to 3,949,515.18, 5,450,329.62 and 2,138,679.18 is: 2,951,376.55
Step by Step Solution
- Step 1: Write the proportion equation
3,949,515.18 : 5,450,329.62 = 2,138,679.18 : x - Step 2: Convert to fraction form
3,949,515.18/5,450,329.62 = 2,138,679.18/x - Step 3: Cross multiply
3,949,515.18x = 5,450,329.62 × 2,138,679.18 - Step 4: Simplify right side
3,949,515.18x = 11,656,506,482,431.31 - Step 5: Solve for x
x = 11,656,506,482,431.31/3,949,515.18 - Step 6: Final answer
x = 2,951,376.55
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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.