Finding the Fourth Proportional to 646,560.65, 892,218.62 and 356,115.70
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Solution
The fourth proportional to 646,560.65, 892,218.62 and 356,115.70 is: 491,420.34
Step by Step Solution
- Step 1: Write the proportion equation
646,560.65 : 892,218.62 = 356,115.70 : x - Step 2: Convert to fraction form
646,560.65/892,218.62 = 356,115.70/x - Step 3: Cross multiply
646,560.65x = 892,218.62 × 356,115.70 - Step 4: Simplify right side
646,560.65x = 317,733,052,172.66 - Step 5: Solve for x
x = 317,733,052,172.66/646,560.65 - Step 6: Final answer
x = 491,420.34
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1.5x scale
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.