Finding the Fourth Proportional to 426,529.80, 639,794.70 and 216,577.80
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Solution
The fourth proportional to 426,529.80, 639,794.70 and 216,577.80 is: 324,866.70
Step by Step Solution
- Step 1: Write the proportion equation
426,529.80 : 639,794.70 = 216,577.80 : x - Step 2: Convert to fraction form
426,529.80/639,794.70 = 216,577.80/x - Step 3: Cross multiply
426,529.80x = 639,794.70 × 216,577.80 - Step 4: Simplify right side
426,529.80x = 138,565,328,577.66 - Step 5: Solve for x
x = 138,565,328,577.66/426,529.80 - Step 6: Final answer
x = 324,866.70
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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.