Finding the Fourth Proportional to 539,543.80, 809,315.70 and 290,711.80
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Solution
The fourth proportional to 539,543.80, 809,315.70 and 290,711.80 is: 436,067.70
Step by Step Solution
- Step 1: Write the proportion equation
539,543.80 : 809,315.70 = 290,711.80 : x - Step 2: Convert to fraction form
539,543.80/809,315.70 = 290,711.80/x - Step 3: Cross multiply
539,543.80x = 809,315.70 × 290,711.80 - Step 4: Simplify right side
539,543.80x = 235,277,623,915.26 - Step 5: Solve for x
x = 235,277,623,915.26/539,543.80 - Step 6: Final answer
x = 436,067.70
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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.