Finding the Fourth Proportional to 538,918.80, 808,378.20 and 397,201.20
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Solution
The fourth proportional to 538,918.80, 808,378.20 and 397,201.20 is: 595,801.80
Step by Step Solution
- Step 1: Write the proportion equation
538,918.80 : 808,378.20 = 397,201.20 : x - Step 2: Convert to fraction form
538,918.80/808,378.20 = 397,201.20/x - Step 3: Cross multiply
538,918.80x = 808,378.20 × 397,201.20 - Step 4: Simplify right side
538,918.80x = 321,088,791,093.84 - Step 5: Solve for x
x = 321,088,791,093.84/538,918.80 - Step 6: Final answer
x = 595,801.80
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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.