Finding the Fourth Proportional to 816,481.17, 1,126,782.47 and 453,911.07
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Solution
The fourth proportional to 816,481.17, 1,126,782.47 and 453,911.07 is: 626,418.65
Step by Step Solution
- Step 1: Write the proportion equation
816,481.17 : 1,126,782.47 = 453,911.07 : x - Step 2: Convert to fraction form
816,481.17/1,126,782.47 = 453,911.07/x - Step 3: Cross multiply
816,481.17x = 1,126,782.47 × 453,911.07 - Step 4: Simplify right side
816,481.17x = 511,459,034,345.39 - Step 5: Solve for x
x = 511,459,034,345.39/816,481.17 - Step 6: Final answer
x = 626,418.65
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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.