Finding the Fourth Proportional to 659,621.20, 989,431.80 and 492,315.70
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Solution
The fourth proportional to 659,621.20, 989,431.80 and 492,315.70 is: 738,473.55
Step by Step Solution
- Step 1: Write the proportion equation
659,621.20 : 989,431.80 = 492,315.70 : x - Step 2: Convert to fraction form
659,621.20/989,431.80 = 492,315.70/x - Step 3: Cross multiply
659,621.20x = 989,431.80 × 492,315.70 - Step 4: Simplify right side
659,621.20x = 487,112,809,219.26 - Step 5: Solve for x
x = 487,112,809,219.26/659,621.20 - Step 6: Final answer
x = 738,473.55
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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.