Finding the Fourth Proportional to 664,593.20, 996,889.80 and 309,643.10
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Solution
The fourth proportional to 664,593.20, 996,889.80 and 309,643.10 is: 464,464.65
Step by Step Solution
- Step 1: Write the proportion equation
664,593.20 : 996,889.80 = 309,643.10 : x - Step 2: Convert to fraction form
664,593.20/996,889.80 = 309,643.10/x - Step 3: Cross multiply
664,593.20x = 996,889.80 × 309,643.10 - Step 4: Simplify right side
664,593.20x = 308,680,048,030.38 - Step 5: Solve for x
x = 308,680,048,030.38/664,593.20 - Step 6: Final answer
x = 464,464.65
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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.