Finding the Fourth Proportional to 1,615,626.68, 2,229,578.42 and 890,476.20
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Solution
The fourth proportional to 1,615,626.68, 2,229,578.42 and 890,476.20 is: 1,228,864.65
Step by Step Solution
- Step 1: Write the proportion equation
1,615,626.68 : 2,229,578.42 = 890,476.20 : x - Step 2: Convert to fraction form
1,615,626.68/2,229,578.42 = 890,476.20/x - Step 3: Cross multiply
1,615,626.68x = 2,229,578.42 × 890,476.20 - Step 4: Simplify right side
1,615,626.68x = 1,985,386,514,591.22 - Step 5: Solve for x
x = 1,985,386,514,591.22/1,615,626.68 - Step 6: Final answer
x = 1,228,864.65
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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.