Finding the Fourth Proportional to 10,434,582.40, 15,633,211.20 and 6,440,828.80
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Solution
The fourth proportional to 10,434,582.40, 15,633,211.20 and 6,440,828.80 is: 9,649,723.69
Step by Step Solution
- Step 1: Write the proportion equation
10,434,582.40 : 15,633,211.20 = 6,440,828.80 : x - Step 2: Convert to fraction form
10,434,582.40/15,633,211.20 = 6,440,828.80/x - Step 3: Cross multiply
10,434,582.40x = 15,633,211.20 × 6,440,828.80 - Step 4: Simplify right side
10,434,582.40x = 100,690,836,933,442.55 - Step 5: Solve for x
x = 100,690,836,933,442.55/10,434,582.40 - Step 6: Final answer
x = 9,649,723.69
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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.