Finding the Fourth Proportional to 8,470,135.20, 12,705,202.80 and 5,110,903.20
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Solution
The fourth proportional to 8,470,135.20, 12,705,202.80 and 5,110,903.20 is: 7,666,354.80
Step by Step Solution
- Step 1: Write the proportion equation
8,470,135.20 : 12,705,202.80 = 5,110,903.20 : x - Step 2: Convert to fraction form
8,470,135.20/12,705,202.80 = 5,110,903.20/x - Step 3: Cross multiply
8,470,135.20x = 12,705,202.80 × 5,110,903.20 - Step 4: Simplify right side
8,470,135.20x = 64,935,061,647,168.97 - Step 5: Solve for x
x = 64,935,061,647,168.97/8,470,135.20 - Step 6: Final answer
x = 7,666,354.80
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Similar ratio
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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.