Finding the Fourth Proportional to 518,639.20, 777,958.80 and 124,655.20
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Solution
The fourth proportional to 518,639.20, 777,958.80 and 124,655.20 is: 186,982.80
Step by Step Solution
- Step 1: Write the proportion equation
518,639.20 : 777,958.80 = 124,655.20 : x - Step 2: Convert to fraction form
518,639.20/777,958.80 = 124,655.20/x - Step 3: Cross multiply
518,639.20x = 777,958.80 × 124,655.20 - Step 4: Simplify right side
518,639.20x = 96,976,609,805.76 - Step 5: Solve for x
x = 96,976,609,805.76/518,639.20 - Step 6: Final answer
x = 186,982.80
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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.