Finding the Fourth Proportional to 660,109.70, 990,553.35 and 436,117.70
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Solution
The fourth proportional to 660,109.70, 990,553.35 and 436,117.70 is: 654,433.42
Step by Step Solution
- Step 1: Write the proportion equation
660,109.70 : 990,553.35 = 436,117.70 : x - Step 2: Convert to fraction form
660,109.70/990,553.35 = 436,117.70/x - Step 3: Cross multiply
660,109.70x = 990,553.35 × 436,117.70 - Step 4: Simplify right side
660,109.70x = 431,997,848,729.30 - Step 5: Solve for x
x = 431,997,848,729.30/660,109.70 - Step 6: Final answer
x = 654,433.42
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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.