Finding the Fourth Proportional to 990,047.97, 1,485,696.71 and 421,428.17
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Solution
The fourth proportional to 990,047.97, 1,485,696.71 and 421,428.17 is: 632,408.20
Step by Step Solution
- Step 1: Write the proportion equation
990,047.97 : 1,485,696.71 = 421,428.17 : x - Step 2: Convert to fraction form
990,047.97/1,485,696.71 = 421,428.17/x - Step 3: Cross multiply
990,047.97x = 1,485,696.71 × 421,428.17 - Step 4: Simplify right side
990,047.97x = 626,114,450,438.13 - Step 5: Solve for x
x = 626,114,450,438.13/990,047.97 - Step 6: Final answer
x = 632,408.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.