Finding the Fourth Proportional to 7,909,992.81, 10,916,213.91 and 4,425,123.70
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Solution
The fourth proportional to 7,909,992.81, 10,916,213.91 and 4,425,123.70 is: 6,106,907.81
Step by Step Solution
- Step 1: Write the proportion equation
7,909,992.81 : 10,916,213.91 = 4,425,123.70 : x - Step 2: Convert to fraction form
7,909,992.81/10,916,213.91 = 4,425,123.70/x - Step 3: Cross multiply
7,909,992.81x = 10,916,213.91 × 4,425,123.70 - Step 4: Simplify right side
7,909,992.81x = 48,305,596,874,916.13 - Step 5: Solve for x
x = 48,305,596,874,916.13/7,909,992.81 - Step 6: Final answer
x = 6,106,907.81
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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.