Finding the Fourth Proportional to 880,665.75, 1,215,318.74 and 478,257.75
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Solution
The fourth proportional to 880,665.75, 1,215,318.74 and 478,257.75 is: 659,995.70
Step by Step Solution
- Step 1: Write the proportion equation
880,665.75 : 1,215,318.74 = 478,257.75 : x - Step 2: Convert to fraction form
880,665.75/1,215,318.74 = 478,257.75/x - Step 3: Cross multiply
880,665.75x = 1,215,318.74 × 478,257.75 - Step 4: Simplify right side
880,665.75x = 581,235,603,733.95 - Step 5: Solve for x
x = 581,235,603,733.95/880,665.75 - Step 6: Final answer
x = 659,995.70
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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.