Finding the Fourth Proportional to 990,824.92, 1,367,330.68 and 538,115.92
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Solution
The fourth proportional to 990,824.92, 1,367,330.68 and 538,115.92 is: 742,595.78
Step by Step Solution
- Step 1: Write the proportion equation
990,824.92 : 1,367,330.68 = 538,115.92 : x - Step 2: Convert to fraction form
990,824.92/1,367,330.68 = 538,115.92/x - Step 3: Cross multiply
990,824.92x = 1,367,330.68 × 538,115.92 - Step 4: Simplify right side
990,824.92x = 735,782,404,066.74 - Step 5: Solve for x
x = 735,782,404,066.74/990,824.92 - Step 6: Final answer
x = 742,595.78
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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.