Finding the Fourth Proportional to 4,090,207.60, 6,135,311.40 and 1,211,678.20
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Solution
The fourth proportional to 4,090,207.60, 6,135,311.40 and 1,211,678.20 is: 1,817,517.30
Step by Step Solution
- Step 1: Write the proportion equation
4,090,207.60 : 6,135,311.40 = 1,211,678.20 : x - Step 2: Convert to fraction form
4,090,207.60/6,135,311.40 = 1,211,678.20/x - Step 3: Cross multiply
4,090,207.60x = 6,135,311.40 × 1,211,678.20 - Step 4: Simplify right side
4,090,207.60x = 7,434,023,073,591.48 - Step 5: Solve for x
x = 7,434,023,073,591.48/4,090,207.60 - Step 6: Final answer
x = 1,817,517.30
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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.