Finding the Fourth Proportional to 499,940.92, 689,948.94 and 285,122.44
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Solution
The fourth proportional to 499,940.92, 689,948.94 and 285,122.44 is: 393,486.34
Step by Step Solution
- Step 1: Write the proportion equation
499,940.92 : 689,948.94 = 285,122.44 : x - Step 2: Convert to fraction form
499,940.92/689,948.94 = 285,122.44/x - Step 3: Cross multiply
499,940.92x = 689,948.94 × 285,122.44 - Step 4: Simplify right side
499,940.92x = 196,719,925,248.21 - Step 5: Solve for x
x = 196,719,925,248.21/499,940.92 - Step 6: Final answer
x = 393,486.34
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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.