Finding the Fourth Proportional to 455,523.20, 683,284.80 and 431,028.80
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Solution
The fourth proportional to 455,523.20, 683,284.80 and 431,028.80 is: 646,543.20
Step by Step Solution
- Step 1: Write the proportion equation
455,523.20 : 683,284.80 = 431,028.80 : x - Step 2: Convert to fraction form
455,523.20/683,284.80 = 431,028.80/x - Step 3: Cross multiply
455,523.20x = 683,284.80 × 431,028.80 - Step 4: Simplify right side
455,523.20x = 294,515,427,402.24 - Step 5: Solve for x
x = 294,515,427,402.24/455,523.20 - Step 6: Final answer
x = 646,543.20
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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.