Finding the Fourth Proportional to 811,397.64, 1,119,714.91 and 448,821.21
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Solution
The fourth proportional to 811,397.64, 1,119,714.91 and 448,821.21 is: 619,365.62
Step by Step Solution
- Step 1: Write the proportion equation
811,397.64 : 1,119,714.91 = 448,821.21 : x - Step 2: Convert to fraction form
811,397.64/1,119,714.91 = 448,821.21/x - Step 3: Cross multiply
811,397.64x = 1,119,714.91 × 448,821.21 - Step 4: Simplify right side
811,397.64x = 502,551,800,761.24 - Step 5: Solve for x
x = 502,551,800,761.24/811,397.64 - Step 6: Final answer
x = 619,365.62
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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.