Finding the Fourth Proportional to 490,984.26, 674,621.99 and 390,207.30
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Solution
The fourth proportional to 490,984.26, 674,621.99 and 390,207.30 is: 536,152.47
Step by Step Solution
- Step 1: Write the proportion equation
490,984.26 : 674,621.99 = 390,207.30 : x - Step 2: Convert to fraction form
490,984.26/674,621.99 = 390,207.30/x - Step 3: Cross multiply
490,984.26x = 674,621.99 × 390,207.30 - Step 4: Simplify right side
490,984.26x = 263,242,423,287.49 - Step 5: Solve for x
x = 263,242,423,287.49/490,984.26 - Step 6: Final answer
x = 536,152.47
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.