Finding the Fourth Proportional to 478,639.99, 660,554.29 and 274,756.92
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Solution
The fourth proportional to 478,639.99, 660,554.29 and 274,756.92 is: 379,182.40
Step by Step Solution
- Step 1: Write the proportion equation
478,639.99 : 660,554.29 = 274,756.92 : x - Step 2: Convert to fraction form
478,639.99/660,554.29 = 274,756.92/x - Step 3: Cross multiply
478,639.99x = 660,554.29 × 274,756.92 - Step 4: Simplify right side
478,639.99x = 181,491,862,213.19 - Step 5: Solve for x
x = 181,491,862,213.19/478,639.99 - Step 6: Final answer
x = 379,182.40
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1.5x scale
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.