Finding the Fourth Proportional to 560,423.80, 840,635.70 and 389,181.70
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Solution
The fourth proportional to 560,423.80, 840,635.70 and 389,181.70 is: 583,772.55
Step by Step Solution
- Step 1: Write the proportion equation
560,423.80 : 840,635.70 = 389,181.70 : x - Step 2: Convert to fraction form
560,423.80/840,635.70 = 389,181.70/x - Step 3: Cross multiply
560,423.80x = 840,635.70 × 389,181.70 - Step 4: Simplify right side
560,423.80x = 327,160,030,806.69 - Step 5: Solve for x
x = 327,160,030,806.69/560,423.80 - Step 6: Final answer
x = 583,772.55
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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.