Finding the Fourth Proportional to 687,059.70, 1,030,589.55 and 477,107.70
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Solution
The fourth proportional to 687,059.70, 1,030,589.55 and 477,107.70 is: 715,661.55
Step by Step Solution
- Step 1: Write the proportion equation
687,059.70 : 1,030,589.55 = 477,107.70 : x - Step 2: Convert to fraction form
687,059.70/1,030,589.55 = 477,107.70/x - Step 3: Cross multiply
687,059.70x = 1,030,589.55 × 477,107.70 - Step 4: Simplify right side
687,059.70x = 491,702,209,844.54 - Step 5: Solve for x
x = 491,702,209,844.54/687,059.70 - Step 6: Final answer
x = 715,661.55
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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.