Finding the Fourth Proportional to 664,418.48, 916,578.61 and 434,874.71
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Solution
The fourth proportional to 664,418.48, 916,578.61 and 434,874.71 is: 599,918.38
Step by Step Solution
- Step 1: Write the proportion equation
664,418.48 : 916,578.61 = 434,874.71 : x - Step 2: Convert to fraction form
664,418.48/916,578.61 = 434,874.71/x - Step 3: Cross multiply
664,418.48x = 916,578.61 × 434,874.71 - Step 4: Simplify right side
664,418.48x = 398,596,857,215.95 - Step 5: Solve for x
x = 398,596,857,215.95/664,418.48 - Step 6: Final answer
x = 599,918.38
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1.5x scale
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.