Finding the Fourth Proportional to 420,609.87, 580,474.76 and 239,329.44
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Solution
The fourth proportional to 420,609.87, 580,474.76 and 239,329.44 is: 330,293.48
Step by Step Solution
- Step 1: Write the proportion equation
420,609.87 : 580,474.76 = 239,329.44 : x - Step 2: Convert to fraction form
420,609.87/580,474.76 = 239,329.44/x - Step 3: Cross multiply
420,609.87x = 580,474.76 × 239,329.44 - Step 4: Simplify right side
420,609.87x = 138,924,698,048.29 - Step 5: Solve for x
x = 138,924,698,048.29/420,609.87 - Step 6: Final answer
x = 330,293.48
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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.