Finding the Fourth Proportional to 743,116.79, 1,025,564.42 and 420,884.21
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Solution
The fourth proportional to 743,116.79, 1,025,564.42 and 420,884.21 is: 580,856.03
Step by Step Solution
- Step 1: Write the proportion equation
743,116.79 : 1,025,564.42 = 420,884.21 : x - Step 2: Convert to fraction form
743,116.79/1,025,564.42 = 420,884.21/x - Step 3: Cross multiply
743,116.79x = 1,025,564.42 × 420,884.21 - Step 4: Simplify right side
743,116.79x = 431,643,870,715.81 - Step 5: Solve for x
x = 431,643,870,715.81/743,116.79 - Step 6: Final answer
x = 580,856.03
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1.5x scale
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.