Finding the Fourth Proportional to 831,649.50, 1,247,286.12 and 381,938.06
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Solution
The fourth proportional to 831,649.50, 1,247,286.12 and 381,938.06 is: 572,820.69
Step by Step Solution
- Step 1: Write the proportion equation
831,649.50 : 1,247,286.12 = 381,938.06 : x - Step 2: Convert to fraction form
831,649.50/1,247,286.12 = 381,938.06/x - Step 3: Cross multiply
831,649.50x = 1,247,286.12 × 381,938.06 - Step 4: Simplify right side
831,649.50x = 476,386,040,189.88 - Step 5: Solve for x
x = 476,386,040,189.88/831,649.50 - Step 6: Final answer
x = 572,820.69
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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.