Finding the Fourth Proportional to 420,465.40, 580,724.94 and 306,252.88
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Solution
The fourth proportional to 420,465.40, 580,724.94 and 306,252.88 is: 422,980.55
Step by Step Solution
- Step 1: Write the proportion equation
420,465.40 : 580,724.94 = 306,252.88 : x - Step 2: Convert to fraction form
420,465.40/580,724.94 = 306,252.88/x - Step 3: Cross multiply
420,465.40x = 580,724.94 × 306,252.88 - Step 4: Simplify right side
420,465.40x = 177,848,685,362.83 - Step 5: Solve for x
x = 177,848,685,362.83/420,465.40 - Step 6: Final answer
x = 422,980.55
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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.