Finding the Fourth Proportional to 422,447.49, 633,671.10 and 280,569.75
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Solution
The fourth proportional to 422,447.49, 633,671.10 and 280,569.75 is: 420,854.54
Step by Step Solution
- Step 1: Write the proportion equation
422,447.49 : 633,671.10 = 280,569.75 : x - Step 2: Convert to fraction form
422,447.49/633,671.10 = 280,569.75/x - Step 3: Cross multiply
422,447.49x = 633,671.10 × 280,569.75 - Step 4: Simplify right side
422,447.49x = 177,788,942,109.23 - Step 5: Solve for x
x = 177,788,942,109.23/422,447.49 - Step 6: Final answer
x = 420,854.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.