Finding the Fourth Proportional to 727,937.60, 1,004,540.13 and 405,640.62
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Solution
The fourth proportional to 727,937.60, 1,004,540.13 and 405,640.62 is: 559,776.39
Step by Step Solution
- Step 1: Write the proportion equation
727,937.60 : 1,004,540.13 = 405,640.62 : x - Step 2: Convert to fraction form
727,937.60/1,004,540.13 = 405,640.62/x - Step 3: Cross multiply
727,937.60x = 1,004,540.13 × 405,640.62 - Step 4: Simplify right side
727,937.60x = 407,482,281,148.08 - Step 5: Solve for x
x = 407,482,281,148.08/727,937.60 - Step 6: Final answer
x = 559,776.39
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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.