Finding the Fourth Proportional to 898,391.20, 1,239,885.84 and 516,434.08
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Solution
The fourth proportional to 898,391.20, 1,239,885.84 and 516,434.08 is: 712,739.95
Step by Step Solution
- Step 1: Write the proportion equation
898,391.20 : 1,239,885.84 = 516,434.08 : x - Step 2: Convert to fraction form
898,391.20/1,239,885.84 = 516,434.08/x - Step 3: Cross multiply
898,391.20x = 1,239,885.84 × 516,434.08 - Step 4: Simplify right side
898,391.20x = 640,319,303,085.43 - Step 5: Solve for x
x = 640,319,303,085.43/898,391.20 - Step 6: Final answer
x = 712,739.95
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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.