Finding the Fourth Proportional to 659,474.10, 989,211.15 and 390,035.70
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Solution
The fourth proportional to 659,474.10, 989,211.15 and 390,035.70 is: 585,053.55
Step by Step Solution
- Step 1: Write the proportion equation
659,474.10 : 989,211.15 = 390,035.70 : x - Step 2: Convert to fraction form
659,474.10/989,211.15 = 390,035.70/x - Step 3: Cross multiply
659,474.10x = 989,211.15 × 390,035.70 - Step 4: Simplify right side
659,474.10x = 385,827,663,338.06 - Step 5: Solve for x
x = 385,827,663,338.06/659,474.10 - Step 6: Final answer
x = 585,053.55
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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.