Finding the Fourth Proportional to 707,418.63, 976,886.13 and 449,378.75
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Solution
The fourth proportional to 707,418.63, 976,886.13 and 449,378.75 is: 620,554.57
Step by Step Solution
- Step 1: Write the proportion equation
707,418.63 : 976,886.13 = 449,378.75 : x - Step 2: Convert to fraction form
707,418.63/976,886.13 = 449,378.75/x - Step 3: Cross multiply
707,418.63x = 976,886.13 × 449,378.75 - Step 4: Simplify right side
707,418.63x = 438,991,863,107.31 - Step 5: Solve for x
x = 438,991,863,107.31/707,418.63 - Step 6: Final answer
x = 620,554.57
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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.