Finding the Fourth Proportional to 543,338.80, 815,117.55 and 455,202.70
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Solution
The fourth proportional to 543,338.80, 815,117.55 and 455,202.70 is: 682,895.66
Step by Step Solution
- Step 1: Write the proportion equation
543,338.80 : 815,117.55 = 455,202.70 : x - Step 2: Convert to fraction form
543,338.80/815,117.55 = 455,202.70/x - Step 3: Cross multiply
543,338.80x = 815,117.55 × 455,202.70 - Step 4: Simplify right side
543,338.80x = 371,043,709,577.39 - Step 5: Solve for x
x = 371,043,709,577.39/543,338.80 - Step 6: Final answer
x = 682,895.66
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1.5x scale
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.