Finding the Fourth Proportional to 3,679,515.10, 5,519,272.65 and 3,119,643.10
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Solution
The fourth proportional to 3,679,515.10, 5,519,272.65 and 3,119,643.10 is: 4,679,464.65
Step by Step Solution
- Step 1: Write the proportion equation
3,679,515.10 : 5,519,272.65 = 3,119,643.10 : x - Step 2: Convert to fraction form
3,679,515.10/5,519,272.65 = 3,119,643.10/x - Step 3: Cross multiply
3,679,515.10x = 5,519,272.65 × 3,119,643.10 - Step 4: Simplify right side
3,679,515.10x = 17,218,160,839,591.22 - Step 5: Solve for x
x = 17,218,160,839,591.22/3,679,515.10 - Step 6: Final answer
x = 4,679,464.65
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Double scale
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Similar ratio
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1.5x scale
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.