Finding the Fourth Proportional to 828,125.87, 1,242,189.09 and 259,551.09
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Solution
The fourth proportional to 828,125.87, 1,242,189.09 and 259,551.09 is: 389,326.73
Step by Step Solution
- Step 1: Write the proportion equation
828,125.87 : 1,242,189.09 = 259,551.09 : x - Step 2: Convert to fraction form
828,125.87/1,242,189.09 = 259,551.09/x - Step 3: Cross multiply
828,125.87x = 1,242,189.09 × 259,551.09 - Step 4: Simplify right side
828,125.87x = 322,411,532,295.61 - Step 5: Solve for x
x = 322,411,532,295.61/828,125.87 - Step 6: Final answer
x = 389,326.73
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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.