Finding the Fourth Proportional to 980,907.20, 1,471,409.40 and 508,515.20
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Solution
The fourth proportional to 980,907.20, 1,471,409.40 and 508,515.20 is: 762,797.99
Step by Step Solution
- Step 1: Write the proportion equation
980,907.20 : 1,471,409.40 = 508,515.20 : x - Step 2: Convert to fraction form
980,907.20/1,471,409.40 = 508,515.20/x - Step 3: Cross multiply
980,907.20x = 1,471,409.40 × 508,515.20 - Step 4: Simplify right side
980,907.20x = 748,234,045,322.88 - Step 5: Solve for x
x = 748,234,045,322.88/980,907.20 - Step 6: Final answer
x = 762,797.99
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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.