Finding the Fourth Proportional to 10,306,653.40, 15,461,729.70 and 3,118,130.20
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Solution
The fourth proportional to 10,306,653.40, 15,461,729.70 and 3,118,130.20 is: 4,677,724.62
Step by Step Solution
- Step 1: Write the proportion equation
10,306,653.40 : 15,461,729.70 = 3,118,130.20 : x - Step 2: Convert to fraction form
10,306,653.40/15,461,729.70 = 3,118,130.20/x - Step 3: Cross multiply
10,306,653.40x = 15,461,729.70 × 3,118,130.20 - Step 4: Simplify right side
10,306,653.40x = 48,211,686,321,806.94 - Step 5: Solve for x
x = 48,211,686,321,806.94/10,306,653.40 - Step 6: Final answer
x = 4,677,724.62
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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.