Finding the Fourth Proportional to 711,203.97, 981,430.23 and 405,346.55
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Solution
The fourth proportional to 711,203.97, 981,430.23 and 405,346.55 is: 559,360.43
Step by Step Solution
- Step 1: Write the proportion equation
711,203.97 : 981,430.23 = 405,346.55 : x - Step 2: Convert to fraction form
711,203.97/981,430.23 = 405,346.55/x - Step 3: Cross multiply
711,203.97x = 981,430.23 × 405,346.55 - Step 4: Simplify right side
711,203.97x = 397,819,357,796.21 - Step 5: Solve for x
x = 397,819,357,796.21/711,203.97 - Step 6: Final answer
x = 559,360.43
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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.