Finding the Fourth Proportional to 863,407.80, 1,295,111.70 and 272,431.80
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Solution
The fourth proportional to 863,407.80, 1,295,111.70 and 272,431.80 is: 408,647.70
Step by Step Solution
- Step 1: Write the proportion equation
863,407.80 : 1,295,111.70 = 272,431.80 : x - Step 2: Convert to fraction form
863,407.80/1,295,111.70 = 272,431.80/x - Step 3: Cross multiply
863,407.80x = 1,295,111.70 × 272,431.80 - Step 4: Simplify right side
863,407.80x = 352,829,611,632.06 - Step 5: Solve for x
x = 352,829,611,632.06/863,407.80 - Step 6: Final answer
x = 408,647.70
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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.