Finding the Fourth Proportional to 863,295.30, 1,191,431.73 and 645,125.12
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Solution
The fourth proportional to 863,295.30, 1,191,431.73 and 645,125.12 is: 890,335.60
Step by Step Solution
- Step 1: Write the proportion equation
863,295.30 : 1,191,431.73 = 645,125.12 : x - Step 2: Convert to fraction form
863,295.30/1,191,431.73 = 645,125.12/x - Step 3: Cross multiply
863,295.30x = 1,191,431.73 × 645,125.12 - Step 4: Simplify right side
863,295.30x = 768,622,540,393.44 - Step 5: Solve for x
x = 768,622,540,393.44/863,295.30 - Step 6: Final answer
x = 890,335.60
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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.