Finding the Fourth Proportional to 699,617.74, 965,398.02 and 393,688.79
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Solution
The fourth proportional to 699,617.74, 965,398.02 and 393,688.79 is: 543,248.63
Step by Step Solution
- Step 1: Write the proportion equation
699,617.74 : 965,398.02 = 393,688.79 : x - Step 2: Convert to fraction form
699,617.74/965,398.02 = 393,688.79/x - Step 3: Cross multiply
699,617.74x = 965,398.02 × 393,688.79 - Step 4: Simplify right side
699,617.74x = 380,066,378,362.20 - Step 5: Solve for x
x = 380,066,378,362.20/699,617.74 - Step 6: Final answer
x = 543,248.63
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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.