Finding the Fourth Proportional to 412,643.17, 618,964.76 and 272,368.99
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Solution
The fourth proportional to 412,643.17, 618,964.76 and 272,368.99 is: 408,553.49
Step by Step Solution
- Step 1: Write the proportion equation
412,643.17 : 618,964.76 = 272,368.99 : x - Step 2: Convert to fraction form
412,643.17/618,964.76 = 272,368.99/x - Step 3: Cross multiply
412,643.17x = 618,964.76 × 272,368.99 - Step 4: Simplify right side
412,643.17x = 168,586,806,526.79 - Step 5: Solve for x
x = 168,586,806,526.79/412,643.17 - Step 6: Final answer
x = 408,553.49
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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.