Finding the Fourth Proportional to 6,474,663.20, 9,711,994.80 and 3,115,431.20
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Solution
The fourth proportional to 6,474,663.20, 9,711,994.80 and 3,115,431.20 is: 4,673,146.80
Step by Step Solution
- Step 1: Write the proportion equation
6,474,663.20 : 9,711,994.80 = 3,115,431.20 : x - Step 2: Convert to fraction form
6,474,663.20/9,711,994.80 = 3,115,431.20/x - Step 3: Cross multiply
6,474,663.20x = 9,711,994.80 × 3,115,431.20 - Step 4: Simplify right side
6,474,663.20x = 30,257,051,614,157.77 - Step 5: Solve for x
x = 30,257,051,614,157.77/6,474,663.20 - Step 6: Final answer
x = 4,673,146.80
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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.