Finding the Fourth Proportional to 5,178,708.20, 7,768,062.30 and 3,293,805.80
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Solution
The fourth proportional to 5,178,708.20, 7,768,062.30 and 3,293,805.80 is: 4,940,708.70
Step by Step Solution
- Step 1: Write the proportion equation
5,178,708.20 : 7,768,062.30 = 3,293,805.80 : x - Step 2: Convert to fraction form
5,178,708.20/7,768,062.30 = 3,293,805.80/x - Step 3: Cross multiply
5,178,708.20x = 7,768,062.30 × 3,293,805.80 - Step 4: Simplify right side
5,178,708.20x = 25,586,488,658,501.34 - Step 5: Solve for x
x = 25,586,488,658,501.34/5,178,708.20 - Step 6: Final answer
x = 4,940,708.70
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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.