Finding the Fourth Proportional to 638,133.40, 880,612.69 and 347,747.49
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Solution
The fourth proportional to 638,133.40, 880,612.69 and 347,747.49 is: 479,885.32
Step by Step Solution
- Step 1: Write the proportion equation
638,133.40 : 880,612.69 = 347,747.49 : x - Step 2: Convert to fraction form
638,133.40/880,612.69 = 347,747.49/x - Step 3: Cross multiply
638,133.40x = 880,612.69 × 347,747.49 - Step 4: Simplify right side
638,133.40x = 306,230,852,609.65 - Step 5: Solve for x
x = 306,230,852,609.65/638,133.40 - Step 6: Final answer
x = 479,885.32
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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.