Finding the Fourth Proportional to 665,612.26, 918,609.52 and 393,767.66
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Solution
The fourth proportional to 665,612.26, 918,609.52 and 393,767.66 is: 543,437.59
Step by Step Solution
- Step 1: Write the proportion equation
665,612.26 : 918,609.52 = 393,767.66 : x - Step 2: Convert to fraction form
665,612.26/918,609.52 = 393,767.66/x - Step 3: Cross multiply
665,612.26x = 918,609.52 × 393,767.66 - Step 4: Simplify right side
665,612.26x = 361,718,721,144.12 - Step 5: Solve for x
x = 361,718,721,144.12/665,612.26 - Step 6: Final answer
x = 543,437.59
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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.