Finding the Fourth Proportional to 405,905.77, 609,000.81 and 125,423.02
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Solution
The fourth proportional to 405,905.77, 609,000.81 and 125,423.02 is: 188,178.46
Step by Step Solution
- Step 1: Write the proportion equation
405,905.77 : 609,000.81 = 125,423.02 : x - Step 2: Convert to fraction form
405,905.77/609,000.81 = 125,423.02/x - Step 3: Cross multiply
405,905.77x = 609,000.81 × 125,423.02 - Step 4: Simplify right side
405,905.77x = 76,382,720,772.65 - Step 5: Solve for x
x = 76,382,720,772.65/405,905.77 - Step 6: Final answer
x = 188,178.46
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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.