Finding the Fourth Proportional to 685,282.32, 1,028,156.99 and 205,521.75
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Solution
The fourth proportional to 685,282.32, 1,028,156.99 and 205,521.75 is: 308,352.66
Step by Step Solution
- Step 1: Write the proportion equation
685,282.32 : 1,028,156.99 = 205,521.75 : x - Step 2: Convert to fraction form
685,282.32/1,028,156.99 = 205,521.75/x - Step 3: Cross multiply
685,282.32x = 1,028,156.99 × 205,521.75 - Step 4: Simplify right side
685,282.32x = 211,308,623,859.53 - Step 5: Solve for x
x = 211,308,623,859.53/685,282.32 - Step 6: Final answer
x = 308,352.66
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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.