Finding the Fourth Proportional to 664,216.20, 994,848.08 and 513,969.30
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Solution
The fourth proportional to 664,216.20, 994,848.08 and 513,969.30 is: 769,811.65
Step by Step Solution
- Step 1: Write the proportion equation
664,216.20 : 994,848.08 = 513,969.30 : x - Step 2: Convert to fraction form
664,216.20/994,848.08 = 513,969.30/x - Step 3: Cross multiply
664,216.20x = 994,848.08 × 513,969.30 - Step 4: Simplify right side
664,216.20x = 511,321,368,714.10 - Step 5: Solve for x
x = 511,321,368,714.10/664,216.20 - Step 6: Final answer
x = 769,811.65
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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.