Finding the Fourth Proportional to 426,201.80, 639,648.30 and 412,377.80
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Solution
The fourth proportional to 426,201.80, 639,648.30 and 412,377.80 is: 618,901.09
Step by Step Solution
- Step 1: Write the proportion equation
426,201.80 : 639,648.30 = 412,377.80 : x - Step 2: Convert to fraction form
426,201.80/639,648.30 = 412,377.80/x - Step 3: Cross multiply
426,201.80x = 639,648.30 × 412,377.80 - Step 4: Simplify right side
426,201.80x = 263,776,758,727.74 - Step 5: Solve for x
x = 263,776,758,727.74/426,201.80 - Step 6: Final answer
x = 618,901.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.