Finding the Fourth Proportional to 764,662.68, 1,055,251.62 and 420,476.79
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Solution
The fourth proportional to 764,662.68, 1,055,251.62 and 420,476.79 is: 580,267.39
Step by Step Solution
- Step 1: Write the proportion equation
764,662.68 : 1,055,251.62 = 420,476.79 : x - Step 2: Convert to fraction form
764,662.68/1,055,251.62 = 420,476.79/x - Step 3: Cross multiply
764,662.68x = 1,055,251.62 × 420,476.79 - Step 4: Simplify right side
764,662.68x = 443,708,813,819.90 - Step 5: Solve for x
x = 443,708,813,819.90/764,662.68 - Step 6: Final answer
x = 580,267.39
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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.