Finding the Fourth Proportional to 718,102.18, 990,976.08 and 395,812.54
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Solution
The fourth proportional to 718,102.18, 990,976.08 and 395,812.54 is: 546,218.59
Step by Step Solution
- Step 1: Write the proportion equation
718,102.18 : 990,976.08 = 395,812.54 : x - Step 2: Convert to fraction form
718,102.18/990,976.08 = 395,812.54/x - Step 3: Cross multiply
718,102.18x = 990,976.08 × 395,812.54 - Step 4: Simplify right side
718,102.18x = 392,240,759,304.04 - Step 5: Solve for x
x = 392,240,759,304.04/718,102.18 - Step 6: Final answer
x = 546,218.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.