Finding the Fourth Proportional to 646,995.70, 892,842.11 and 352,647.96
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Solution
The fourth proportional to 646,995.70, 892,842.11 and 352,647.96 is: 486,647.66
Step by Step Solution
- Step 1: Write the proportion equation
646,995.70 : 892,842.11 = 352,647.96 : x - Step 2: Convert to fraction form
646,995.70/892,842.11 = 352,647.96/x - Step 3: Cross multiply
646,995.70x = 892,842.11 × 352,647.96 - Step 4: Simplify right side
646,995.70x = 314,858,944,904.63 - Step 5: Solve for x
x = 314,858,944,904.63/646,995.70 - Step 6: Final answer
x = 486,647.66
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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.