Finding the Fourth Proportional to 847,062.12, 1,270,323.73 and 278,312.12
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Solution
The fourth proportional to 847,062.12, 1,270,323.73 and 278,312.12 is: 417,379.65
Step by Step Solution
- Step 1: Write the proportion equation
847,062.12 : 1,270,323.73 = 278,312.12 : x - Step 2: Convert to fraction form
847,062.12/1,270,323.73 = 278,312.12/x - Step 3: Cross multiply
847,062.12x = 1,270,323.73 × 278,312.12 - Step 4: Simplify right side
847,062.12x = 353,546,490,382.61 - Step 5: Solve for x
x = 353,546,490,382.61/847,062.12 - Step 6: Final answer
x = 417,379.65
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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.