Finding the Fourth Proportional to 528,463.46, 729,270.18 and 321,657.09
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Solution
The fourth proportional to 528,463.46, 729,270.18 and 321,657.09 is: 443,881.07
Step by Step Solution
- Step 1: Write the proportion equation
528,463.46 : 729,270.18 = 321,657.09 : x - Step 2: Convert to fraction form
528,463.46/729,270.18 = 321,657.09/x - Step 3: Cross multiply
528,463.46x = 729,270.18 × 321,657.09 - Step 4: Simplify right side
528,463.46x = 234,574,923,922.58 - Step 5: Solve for x
x = 234,574,923,922.58/528,463.46 - Step 6: Final answer
x = 443,881.07
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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.