Finding the Fourth Proportional to 1,391,369.68, 2,087,989.80 and 492,808.24
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Solution
The fourth proportional to 1,391,369.68, 2,087,989.80 and 492,808.24 is: 739,543.63
Step by Step Solution
- Step 1: Write the proportion equation
1,391,369.68 : 2,087,989.80 = 492,808.24 : x - Step 2: Convert to fraction form
1,391,369.68/2,087,989.80 = 492,808.24/x - Step 3: Cross multiply
1,391,369.68x = 2,087,989.80 × 492,808.24 - Step 4: Simplify right side
1,391,369.68x = 1,028,978,578,475.95 - Step 5: Solve for x
x = 1,028,978,578,475.95/1,391,369.68 - Step 6: Final answer
x = 739,543.63
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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.