Finding the Fourth Proportional to 420,638.84, 580,478.60 and 229,652.23
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Solution
The fourth proportional to 420,638.84, 580,478.60 and 229,652.23 is: 316,918.43
Step by Step Solution
- Step 1: Write the proportion equation
420,638.84 : 580,478.60 = 229,652.23 : x - Step 2: Convert to fraction form
420,638.84/580,478.60 = 229,652.23/x - Step 3: Cross multiply
420,638.84x = 580,478.60 × 229,652.23 - Step 4: Simplify right side
420,638.84x = 133,308,200,906.62 - Step 5: Solve for x
x = 133,308,200,906.62/420,638.84 - Step 6: Final answer
x = 316,918.43
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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.