Finding the Fourth Proportional to 660,688.68, 911,735.08 and 385,028.96
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Solution
The fourth proportional to 660,688.68, 911,735.08 and 385,028.96 is: 531,331.05
Step by Step Solution
- Step 1: Write the proportion equation
660,688.68 : 911,735.08 = 385,028.96 : x - Step 2: Convert to fraction form
660,688.68/911,735.08 = 385,028.96/x - Step 3: Cross multiply
660,688.68x = 911,735.08 × 385,028.96 - Step 4: Simplify right side
660,688.68x = 351,044,409,647.92 - Step 5: Solve for x
x = 351,044,409,647.92/660,688.68 - Step 6: Final answer
x = 531,331.05
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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.