Finding the Fourth Proportional to 640,415.10, 960,622.65 and 197,183.10
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Solution
The fourth proportional to 640,415.10, 960,622.65 and 197,183.10 is: 295,774.65
Step by Step Solution
- Step 1: Write the proportion equation
640,415.10 : 960,622.65 = 197,183.10 : x - Step 2: Convert to fraction form
640,415.10/960,622.65 = 197,183.10/x - Step 3: Cross multiply
640,415.10x = 960,622.65 × 197,183.10 - Step 4: Simplify right side
640,415.10x = 189,418,552,057.22 - Step 5: Solve for x
x = 189,418,552,057.22/640,415.10 - Step 6: Final answer
x = 295,774.65
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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.