Finding the Fourth Proportional to 420,101.80, 628,986.30 and 408,437.80
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Solution
The fourth proportional to 420,101.80, 628,986.30 and 408,437.80 is: 611,522.68
Step by Step Solution
- Step 1: Write the proportion equation
420,101.80 : 628,986.30 = 408,437.80 : x - Step 2: Convert to fraction form
420,101.80/628,986.30 = 408,437.80/x - Step 3: Cross multiply
420,101.80x = 628,986.30 × 408,437.80 - Step 4: Simplify right side
420,101.80x = 256,901,780,602.14 - Step 5: Solve for x
x = 256,901,780,602.14/420,101.80 - Step 6: Final answer
x = 611,522.68
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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.