Finding the Fourth Proportional to 393,947,413.84, 543,675,563.04 and 217,731,622.24
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Solution
The fourth proportional to 393,947,413.84, 543,675,563.04 and 217,731,622.24 is: 300,485,186.99
Step by Step Solution
- Step 1: Write the proportion equation
393,947,413.84 : 543,675,563.04 = 217,731,622.24 : x - Step 2: Convert to fraction form
393,947,413.84/543,675,563.04 = 217,731,622.24/x - Step 3: Cross multiply
393,947,413.84x = 543,675,563.04 × 217,731,622.24 - Step 4: Simplify right side
393,947,413.84x = 118,375,362,312,944,576 - Step 5: Solve for x
x = 118,375,362,312,944,576/393,947,413.84 - Step 6: Final answer
x = 300,485,186.99
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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.