Finding the Fourth Proportional to 1,218,276.76, 1,681,235.22 and 674,421.62
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Solution
The fourth proportional to 1,218,276.76, 1,681,235.22 and 674,421.62 is: 930,709.19
Step by Step Solution
- Step 1: Write the proportion equation
1,218,276.76 : 1,681,235.22 = 674,421.62 : x - Step 2: Convert to fraction form
1,218,276.76/1,681,235.22 = 674,421.62/x - Step 3: Cross multiply
1,218,276.76x = 1,681,235.22 × 674,421.62 - Step 4: Simplify right side
1,218,276.76x = 1,133,861,380,673.46 - Step 5: Solve for x
x = 1,133,861,380,673.46/1,218,276.76 - Step 6: Final answer
x = 930,709.19
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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.