Finding the Fourth Proportional to 420,640.26, 580,485.51 and 229,657.98
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Solution
The fourth proportional to 420,640.26, 580,485.51 and 229,657.98 is: 316,929.08
Step by Step Solution
- Step 1: Write the proportion equation
420,640.26 : 580,485.51 = 229,657.98 : x - Step 2: Convert to fraction form
420,640.26/580,485.51 = 229,657.98/x - Step 3: Cross multiply
420,640.26x = 580,485.51 × 229,657.98 - Step 4: Simplify right side
420,640.26x = 133,313,129,645.87 - Step 5: Solve for x
x = 133,313,129,645.87/420,640.26 - Step 6: Final answer
x = 316,929.08
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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.