Finding the Fourth Proportional to 420,608.67, 580,437.01 and 229,622.07
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Solution
The fourth proportional to 420,608.67, 580,437.01 and 229,622.07 is: 316,876.84
Step by Step Solution
- Step 1: Write the proportion equation
420,608.67 : 580,437.01 = 229,622.07 : x - Step 2: Convert to fraction form
420,608.67/580,437.01 = 229,622.07/x - Step 3: Cross multiply
420,608.67x = 580,437.01 × 229,622.07 - Step 4: Simplify right side
420,608.67x = 133,281,145,851.20 - Step 5: Solve for x
x = 133,281,145,851.20/420,608.67 - Step 6: Final answer
x = 316,876.84
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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.