Finding the Fourth Proportional to 493,503.36, 739,639.68 and 256,705.92
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Solution
The fourth proportional to 493,503.36, 739,639.68 and 256,705.92 is: 384,738.79
Step by Step Solution
- Step 1: Write the proportion equation
493,503.36 : 739,639.68 = 256,705.92 : x - Step 2: Convert to fraction form
493,503.36/739,639.68 = 256,705.92/x - Step 3: Cross multiply
493,503.36x = 739,639.68 × 256,705.92 - Step 4: Simplify right side
493,503.36x = 189,869,884,522.91 - Step 5: Solve for x
x = 189,869,884,522.91/493,503.36 - Step 6: Final answer
x = 384,738.79
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1.5x scale
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.