Finding the Fourth Proportional to 919,934.28, 1,378,370.28 and 320,565
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Solution
The fourth proportional to 919,934.28, 1,378,370.28 and 320,565 is: 480,313.95
Step by Step Solution
- Step 1: Write the proportion equation
919,934.28 : 1,378,370.28 = 320,565 : x - Step 2: Convert to fraction form
919,934.28/1,378,370.28 = 320,565/x - Step 3: Cross multiply
919,934.28x = 1,378,370.28 × 320,565 - Step 4: Simplify right side
919,934.28x = 441,857,268,808.20 - Step 5: Solve for x
x = 441,857,268,808.20/919,934.28 - Step 6: Final answer
x = 480,313.95
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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.