Finding the Fourth Proportional to 499,588.74, 689,390.78 and 281,785.41
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Solution
The fourth proportional to 499,588.74, 689,390.78 and 281,785.41 is: 388,840.35
Step by Step Solution
- Step 1: Write the proportion equation
499,588.74 : 689,390.78 = 281,785.41 : x - Step 2: Convert to fraction form
499,588.74/689,390.78 = 281,785.41/x - Step 3: Cross multiply
499,588.74x = 689,390.78 × 281,785.41 - Step 4: Simplify right side
499,588.74x = 194,260,262,183.59 - Step 5: Solve for x
x = 194,260,262,183.59/499,588.74 - Step 6: Final answer
x = 388,840.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.