Finding the Fourth Proportional to 513,751.40, 709,261.97 and 309,853.75
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Solution
The fourth proportional to 513,751.40, 709,261.97 and 309,853.75 is: 427,770.09
Step by Step Solution
- Step 1: Write the proportion equation
513,751.40 : 709,261.97 = 309,853.75 : x - Step 2: Convert to fraction form
513,751.40/709,261.97 = 309,853.75/x - Step 3: Cross multiply
513,751.40x = 709,261.97 × 309,853.75 - Step 4: Simplify right side
513,751.40x = 219,767,481,136.89 - Step 5: Solve for x
x = 219,767,481,136.89/513,751.40 - Step 6: Final answer
x = 427,770.09
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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.