Finding the Fourth Proportional to 710,331.84, 980,251.92 and 388,042.08
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Solution
The fourth proportional to 710,331.84, 980,251.92 and 388,042.08 is: 535,494.78
Step by Step Solution
- Step 1: Write the proportion equation
710,331.84 : 980,251.92 = 388,042.08 : x - Step 2: Convert to fraction form
710,331.84/980,251.92 = 388,042.08/x - Step 3: Cross multiply
710,331.84x = 980,251.92 × 388,042.08 - Step 4: Simplify right side
710,331.84x = 380,378,993,960.79 - Step 5: Solve for x
x = 380,378,993,960.79/710,331.84 - Step 6: Final answer
x = 535,494.78
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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.