Finding the Fourth Proportional to 412,605.20, 618,907.80 and 202,653.20
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Solution
The fourth proportional to 412,605.20, 618,907.80 and 202,653.20 is: 303,979.80
Step by Step Solution
- Step 1: Write the proportion equation
412,605.20 : 618,907.80 = 202,653.20 : x - Step 2: Convert to fraction form
412,605.20/618,907.80 = 202,653.20/x - Step 3: Cross multiply
412,605.20x = 618,907.80 × 202,653.20 - Step 4: Simplify right side
412,605.20x = 125,423,646,174.96 - Step 5: Solve for x
x = 125,423,646,174.96/412,605.20 - Step 6: Final answer
x = 303,979.80
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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.