Finding the Fourth Proportional to 1,087,811.28, 1,631,470.86 and 413,652.18
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Solution
The fourth proportional to 1,087,811.28, 1,631,470.86 and 413,652.18 is: 620,384.70
Step by Step Solution
- Step 1: Write the proportion equation
1,087,811.28 : 1,631,470.86 = 413,652.18 : x - Step 2: Convert to fraction form
1,087,811.28/1,631,470.86 = 413,652.18/x - Step 3: Cross multiply
1,087,811.28x = 1,631,470.86 × 413,652.18 - Step 4: Simplify right side
1,087,811.28x = 674,861,477,845.48 - Step 5: Solve for x
x = 674,861,477,845.48/1,087,811.28 - Step 6: Final answer
x = 620,384.70
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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.