Finding the Fourth Proportional to 765,675.96, 1,056,614.18 and 421,509.09
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Solution
The fourth proportional to 765,675.96, 1,056,614.18 and 421,509.09 is: 581,672.28
Step by Step Solution
- Step 1: Write the proportion equation
765,675.96 : 1,056,614.18 = 421,509.09 : x - Step 2: Convert to fraction form
765,675.96/1,056,614.18 = 421,509.09/x - Step 3: Cross multiply
765,675.96x = 1,056,614.18 × 421,509.09 - Step 4: Simplify right side
765,675.96x = 445,372,481,492.90 - Step 5: Solve for x
x = 445,372,481,492.90/765,675.96 - Step 6: Final answer
x = 581,672.28
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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.