Finding the Fourth Proportional to 687,906.14, 949,398.06 and 415,975.98
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Solution
The fourth proportional to 687,906.14, 949,398.06 and 415,975.98 is: 574,099.82
Step by Step Solution
- Step 1: Write the proportion equation
687,906.14 : 949,398.06 = 415,975.98 : x - Step 2: Convert to fraction form
687,906.14/949,398.06 = 415,975.98/x - Step 3: Cross multiply
687,906.14x = 949,398.06 × 415,975.98 - Step 4: Simplify right side
687,906.14x = 394,926,788,418.60 - Step 5: Solve for x
x = 394,926,788,418.60/687,906.14 - Step 6: Final answer
x = 574,099.82
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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.