Finding the Fourth Proportional to 7,381,284.63, 11,072,505.09 and 1,989,852.54
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Solution
The fourth proportional to 7,381,284.63, 11,072,505.09 and 1,989,852.54 is: 2,984,934.67
Step by Step Solution
- Step 1: Write the proportion equation
7,381,284.63 : 11,072,505.09 = 1,989,852.54 : x - Step 2: Convert to fraction form
7,381,284.63/11,072,505.09 = 1,989,852.54/x - Step 3: Cross multiply
7,381,284.63x = 11,072,505.09 × 1,989,852.54 - Step 4: Simplify right side
7,381,284.63x = 22,032,652,377,499.43 - Step 5: Solve for x
x = 22,032,652,377,499.43/7,381,284.63 - Step 6: Final answer
x = 2,984,934.67
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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.