Finding the Fourth Proportional to 425,445.80, 638,168.70 and 399,201.80
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Solution
The fourth proportional to 425,445.80, 638,168.70 and 399,201.80 is: 598,802.70
Step by Step Solution
- Step 1: Write the proportion equation
425,445.80 : 638,168.70 = 399,201.80 : x - Step 2: Convert to fraction form
425,445.80/638,168.70 = 399,201.80/x - Step 3: Cross multiply
425,445.80x = 638,168.70 × 399,201.80 - Step 4: Simplify right side
425,445.80x = 254,758,093,743.66 - Step 5: Solve for x
x = 254,758,093,743.66/425,445.80 - Step 6: Final answer
x = 598,802.70
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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.