Finding the Fourth Proportional to 386,645.80, 579,968.70 and 324,437.80
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Solution
The fourth proportional to 386,645.80, 579,968.70 and 324,437.80 is: 486,656.70
Step by Step Solution
- Step 1: Write the proportion equation
386,645.80 : 579,968.70 = 324,437.80 : x - Step 2: Convert to fraction form
386,645.80/579,968.70 = 324,437.80/x - Step 3: Cross multiply
386,645.80x = 579,968.70 × 324,437.80 - Step 4: Simplify right side
386,645.80x = 188,163,769,096.86 - Step 5: Solve for x
x = 188,163,769,096.86/386,645.80 - Step 6: Final answer
x = 486,656.70
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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.