Finding the Fourth Proportional to 492,759.80, 739,139.70 and 439,615.70
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Solution
The fourth proportional to 492,759.80, 739,139.70 and 439,615.70 is: 659,423.55
Step by Step Solution
- Step 1: Write the proportion equation
492,759.80 : 739,139.70 = 439,615.70 : x - Step 2: Convert to fraction form
492,759.80/739,139.70 = 439,615.70/x - Step 3: Cross multiply
492,759.80x = 739,139.70 × 439,615.70 - Step 4: Simplify right side
492,759.80x = 324,937,416,613.29 - Step 5: Solve for x
x = 324,937,416,613.29/492,759.80 - Step 6: Final answer
x = 659,423.55
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1.5x scale
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.