Finding the Fourth Proportional to 3,148,577.60, 4,722,638.61 and 990,220.12
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Solution
The fourth proportional to 3,148,577.60, 4,722,638.61 and 990,220.12 is: 1,485,258.55
Step by Step Solution
- Step 1: Write the proportion equation
3,148,577.60 : 4,722,638.61 = 990,220.12 : x - Step 2: Convert to fraction form
3,148,577.60/4,722,638.61 = 990,220.12/x - Step 3: Cross multiply
3,148,577.60x = 4,722,638.61 × 990,220.12 - Step 4: Simplify right side
3,148,577.60x = 4,676,451,789,582.40 - Step 5: Solve for x
x = 4,676,451,789,582.40/3,148,577.60 - Step 6: Final answer
x = 1,485,258.55
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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.