Finding the Fourth Proportional to 919,116.16, 1,267,489.74 and 613,205
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Solution
The fourth proportional to 919,116.16, 1,267,489.74 and 613,205 is: 845,628.75
Step by Step Solution
- Step 1: Write the proportion equation
919,116.16 : 1,267,489.74 = 613,205 : x - Step 2: Convert to fraction form
919,116.16/1,267,489.74 = 613,205/x - Step 3: Cross multiply
919,116.16x = 1,267,489.74 × 613,205 - Step 4: Simplify right side
919,116.16x = 777,231,046,016.70 - Step 5: Solve for x
x = 777,231,046,016.70/919,116.16 - Step 6: Final answer
x = 845,628.75
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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.