Finding the Fourth Proportional to 5,193,979.20, 7,790,968.80 and 1,648,123.20
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Solution
The fourth proportional to 5,193,979.20, 7,790,968.80 and 1,648,123.20 is: 2,472,184.80
Step by Step Solution
- Step 1: Write the proportion equation
5,193,979.20 : 7,790,968.80 = 1,648,123.20 : x - Step 2: Convert to fraction form
5,193,979.20/7,790,968.80 = 1,648,123.20/x - Step 3: Cross multiply
5,193,979.20x = 7,790,968.80 × 1,648,123.20 - Step 4: Simplify right side
5,193,979.20x = 12,840,476,429,756.16 - Step 5: Solve for x
x = 12,840,476,429,756.16/5,193,979.20 - Step 6: Final answer
x = 2,472,184.80
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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.