Finding the Fourth Proportional to 816,794.47, 1,126,996.20 and 489,958.26
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Solution
The fourth proportional to 816,794.47, 1,126,996.20 and 489,958.26 is: 676,034.32
Step by Step Solution
- Step 1: Write the proportion equation
816,794.47 : 1,126,996.20 = 489,958.26 : x - Step 2: Convert to fraction form
816,794.47/1,126,996.20 = 489,958.26/x - Step 3: Cross multiply
816,794.47x = 1,126,996.20 × 489,958.26 - Step 4: Simplify right side
816,794.47x = 552,181,097,178.61 - Step 5: Solve for x
x = 552,181,097,178.61/816,794.47 - Step 6: Final answer
x = 676,034.32
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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.