Finding the Fourth Proportional to 638,078.55, 880,567.20 and 351,617.09
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Solution
The fourth proportional to 638,078.55, 880,567.20 and 351,617.09 is: 485,241.95
Step by Step Solution
- Step 1: Write the proportion equation
638,078.55 : 880,567.20 = 351,617.09 : x - Step 2: Convert to fraction form
638,078.55/880,567.20 = 351,617.09/x - Step 3: Cross multiply
638,078.55x = 880,567.20 × 351,617.09 - Step 4: Simplify right side
638,078.55x = 309,622,479,440.40 - Step 5: Solve for x
x = 309,622,479,440.40/638,078.55 - Step 6: Final answer
x = 485,241.95
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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.