Finding the Fourth Proportional to 543,853.80, 815,780.70 and 465,121.80
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Solution
The fourth proportional to 543,853.80, 815,780.70 and 465,121.80 is: 697,682.70
Step by Step Solution
- Step 1: Write the proportion equation
543,853.80 : 815,780.70 = 465,121.80 : x - Step 2: Convert to fraction form
543,853.80/815,780.70 = 465,121.80/x - Step 3: Cross multiply
543,853.80x = 815,780.70 × 465,121.80 - Step 4: Simplify right side
543,853.80x = 379,437,387,589.26 - Step 5: Solve for x
x = 379,437,387,589.26/543,853.80 - Step 6: Final answer
x = 697,682.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.