Finding the Fourth Proportional to 910,937.70, 1,366,406.55 and 319,961.70
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Solution
The fourth proportional to 910,937.70, 1,366,406.55 and 319,961.70 is: 479,942.55
Step by Step Solution
- Step 1: Write the proportion equation
910,937.70 : 1,366,406.55 = 319,961.70 : x - Step 2: Convert to fraction form
910,937.70/1,366,406.55 = 319,961.70/x - Step 3: Cross multiply
910,937.70x = 1,366,406.55 × 319,961.70 - Step 4: Simplify right side
910,937.70x = 437,197,762,629.14 - Step 5: Solve for x
x = 437,197,762,629.14/910,937.70 - Step 6: Final answer
x = 479,942.55
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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.