Finding the Fourth Proportional to 539,471.40, 809,207.10 and 371,509.80
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Solution
The fourth proportional to 539,471.40, 809,207.10 and 371,509.80 is: 557,264.70
Step by Step Solution
- Step 1: Write the proportion equation
539,471.40 : 809,207.10 = 371,509.80 : x - Step 2: Convert to fraction form
539,471.40/809,207.10 = 371,509.80/x - Step 3: Cross multiply
539,471.40x = 809,207.10 × 371,509.80 - Step 4: Simplify right side
539,471.40x = 300,628,367,879.58 - Step 5: Solve for x
x = 300,628,367,879.58/539,471.40 - Step 6: Final answer
x = 557,264.70
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Similar ratio
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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.