Finding the Fourth Proportional to 860,403.26, 1,290,727.61 and 320,613.49
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Solution
The fourth proportional to 860,403.26, 1,290,727.61 and 320,613.49 is: 480,965.96
Step by Step Solution
- Step 1: Write the proportion equation
860,403.26 : 1,290,727.61 = 320,613.49 : x - Step 2: Convert to fraction form
860,403.26/1,290,727.61 = 320,613.49/x - Step 3: Cross multiply
860,403.26x = 1,290,727.61 × 320,613.49 - Step 4: Simplify right side
860,403.26x = 413,824,684,894.10 - Step 5: Solve for x
x = 413,824,684,894.10/860,403.26 - Step 6: Final answer
x = 480,965.96
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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.