Finding the Fourth Proportional to 461,138.70, 691,708.05 and 425,709.30
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Solution
The fourth proportional to 461,138.70, 691,708.05 and 425,709.30 is: 638,563.95
Step by Step Solution
- Step 1: Write the proportion equation
461,138.70 : 691,708.05 = 425,709.30 : x - Step 2: Convert to fraction form
461,138.70/691,708.05 = 425,709.30/x - Step 3: Cross multiply
461,138.70x = 691,708.05 × 425,709.30 - Step 4: Simplify right side
461,138.70x = 294,466,549,769.87 - Step 5: Solve for x
x = 294,466,549,769.87/461,138.70 - Step 6: Final answer
x = 638,563.95
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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.