Finding the Fourth Proportional to 641,729.08, 885,987.78 and 412,378.84
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Solution
The fourth proportional to 641,729.08, 885,987.78 and 412,378.84 is: 569,340.90
Step by Step Solution
- Step 1: Write the proportion equation
641,729.08 : 885,987.78 = 412,378.84 : x - Step 2: Convert to fraction form
641,729.08/885,987.78 = 412,378.84/x - Step 3: Cross multiply
641,729.08x = 885,987.78 × 412,378.84 - Step 4: Simplify right side
641,729.08x = 365,362,612,970.58 - Step 5: Solve for x
x = 365,362,612,970.58/641,729.08 - Step 6: Final answer
x = 569,340.90
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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.