Finding the Fourth Proportional to 7,179,218.40, 10,768,827.60 and 5,163,679.20
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Solution
The fourth proportional to 7,179,218.40, 10,768,827.60 and 5,163,679.20 is: 7,745,518.80
Step by Step Solution
- Step 1: Write the proportion equation
7,179,218.40 : 10,768,827.60 = 5,163,679.20 : x - Step 2: Convert to fraction form
7,179,218.40/10,768,827.60 = 5,163,679.20/x - Step 3: Cross multiply
7,179,218.40x = 10,768,827.60 × 5,163,679.20 - Step 4: Simplify right side
7,179,218.40x = 55,606,771,086,505.92 - Step 5: Solve for x
x = 55,606,771,086,505.92/7,179,218.40 - Step 6: Final answer
x = 7,745,518.80
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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.