Finding the Fourth Proportional to 12,457,814.30, 18,686,721.45 and 4,379,911.10
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Solution
The fourth proportional to 12,457,814.30, 18,686,721.45 and 4,379,911.10 is: 6,569,866.65
Step by Step Solution
- Step 1: Write the proportion equation
12,457,814.30 : 18,686,721.45 = 4,379,911.10 : x - Step 2: Convert to fraction form
12,457,814.30/18,686,721.45 = 4,379,911.10/x - Step 3: Cross multiply
12,457,814.30x = 18,686,721.45 × 4,379,911.10 - Step 4: Simplify right side
12,457,814.30x = 81,846,178,701,463.08 - Step 5: Solve for x
x = 81,846,178,701,463.08/12,457,814.30 - Step 6: Final answer
x = 6,569,866.65
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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.