Finding the Fourth Proportional to 5,379,423.60, 7,420,287.78 and 3,285,283.62
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Solution
The fourth proportional to 5,379,423.60, 7,420,287.78 and 3,285,283.62 is: 4,531,665.79
Step by Step Solution
- Step 1: Write the proportion equation
5,379,423.60 : 7,420,287.78 = 3,285,283.62 : x - Step 2: Convert to fraction form
5,379,423.60/7,420,287.78 = 3,285,283.62/x - Step 3: Cross multiply
5,379,423.60x = 7,420,287.78 × 3,285,283.62 - Step 4: Simplify right side
5,379,423.60x = 24,377,749,899,320.16 - Step 5: Solve for x
x = 24,377,749,899,320.16/5,379,423.60 - Step 6: Final answer
x = 4,531,665.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.