Finding the Fourth Proportional to 426,199.80, 639,645.30 and 412,375.80
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Solution
The fourth proportional to 426,199.80, 639,645.30 and 412,375.80 is: 618,898.09
Step by Step Solution
- Step 1: Write the proportion equation
426,199.80 : 639,645.30 = 412,375.80 : x - Step 2: Convert to fraction form
426,199.80/639,645.30 = 412,375.80/x - Step 3: Cross multiply
426,199.80x = 639,645.30 × 412,375.80 - Step 4: Simplify right side
426,199.80x = 263,774,242,303.74 - Step 5: Solve for x
x = 263,774,242,303.74/426,199.80 - Step 6: Final answer
x = 618,898.09
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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.