Finding the Fourth Proportional to 420,644.57, 580,486.47 and 229,657.96
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Solution
The fourth proportional to 420,644.57, 580,486.47 and 229,657.96 is: 316,926.32
Step by Step Solution
- Step 1: Write the proportion equation
420,644.57 : 580,486.47 = 229,657.96 : x - Step 2: Convert to fraction form
420,644.57/580,486.47 = 229,657.96/x - Step 3: Cross multiply
420,644.57x = 580,486.47 × 229,657.96 - Step 4: Simplify right side
420,644.57x = 133,313,335,605.37 - Step 5: Solve for x
x = 133,313,335,605.37/420,644.57 - Step 6: Final answer
x = 316,926.32
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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.