Finding the Fourth Proportional to 763,521.75, 1,053,672.68 and 419,389.49
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Solution
The fourth proportional to 763,521.75, 1,053,672.68 and 419,389.49 is: 578,764.46
Step by Step Solution
- Step 1: Write the proportion equation
763,521.75 : 1,053,672.68 = 419,389.49 : x - Step 2: Convert to fraction form
763,521.75/1,053,672.68 = 419,389.49/x - Step 3: Cross multiply
763,521.75x = 1,053,672.68 × 419,389.49 - Step 4: Simplify right side
763,521.75x = 441,899,251,574.79 - Step 5: Solve for x
x = 441,899,251,574.79/763,521.75 - Step 6: Final answer
x = 578,764.46
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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.