Finding the Fourth Proportional to 503,398.19, 694,946.59 and 388,418.49
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Solution
The fourth proportional to 503,398.19, 694,946.59 and 388,418.49 is: 536,215.88
Step by Step Solution
- Step 1: Write the proportion equation
503,398.19 : 694,946.59 = 388,418.49 : x - Step 2: Convert to fraction form
503,398.19/694,946.59 = 388,418.49/x - Step 3: Cross multiply
503,398.19x = 694,946.59 × 388,418.49 - Step 4: Simplify right side
503,398.19x = 269,930,104,147.40 - Step 5: Solve for x
x = 269,930,104,147.40/503,398.19 - Step 6: Final answer
x = 536,215.88
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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.