Finding the Fourth Proportional to 858,809.70, 1,288,214.55 and 740,711.70
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Solution
The fourth proportional to 858,809.70, 1,288,214.55 and 740,711.70 is: 1,111,067.55
Step by Step Solution
- Step 1: Write the proportion equation
858,809.70 : 1,288,214.55 = 740,711.70 : x - Step 2: Convert to fraction form
858,809.70/1,288,214.55 = 740,711.70/x - Step 3: Cross multiply
858,809.70x = 1,288,214.55 × 740,711.70 - Step 4: Simplify right side
858,809.70x = 954,195,589,295.24 - Step 5: Solve for x
x = 954,195,589,295.24/858,809.70 - Step 6: Final answer
x = 1,111,067.55
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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.