Finding the Fourth Proportional to 918,995.36, 1,378,493.64 and 287,958.38
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Solution
The fourth proportional to 918,995.36, 1,378,493.64 and 287,958.38 is: 431,937.75
Step by Step Solution
- Step 1: Write the proportion equation
918,995.36 : 1,378,493.64 = 287,958.38 : x - Step 2: Convert to fraction form
918,995.36/1,378,493.64 = 287,958.38/x - Step 3: Cross multiply
918,995.36x = 1,378,493.64 × 287,958.38 - Step 4: Simplify right side
918,995.36x = 396,948,788,522.24 - Step 5: Solve for x
x = 396,948,788,522.24/918,995.36 - Step 6: Final answer
x = 431,937.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.