Finding the Fourth Proportional to 859,558.20, 1,289,337.30 and 260,489.70
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Solution
The fourth proportional to 859,558.20, 1,289,337.30 and 260,489.70 is: 390,734.55
Step by Step Solution
- Step 1: Write the proportion equation
859,558.20 : 1,289,337.30 = 260,489.70 : x - Step 2: Convert to fraction form
859,558.20/1,289,337.30 = 260,489.70/x - Step 3: Cross multiply
859,558.20x = 1,289,337.30 × 260,489.70 - Step 4: Simplify right side
859,558.20x = 335,859,086,475.81 - Step 5: Solve for x
x = 335,859,086,475.81/859,558.20 - Step 6: Final answer
x = 390,734.55
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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.