Finding the Fourth Proportional to 858,831.20, 1,288,246.80 and 297,865.70
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Solution
The fourth proportional to 858,831.20, 1,288,246.80 and 297,865.70 is: 446,798.55
Step by Step Solution
- Step 1: Write the proportion equation
858,831.20 : 1,288,246.80 = 297,865.70 : x - Step 2: Convert to fraction form
858,831.20/1,288,246.80 = 297,865.70/x - Step 3: Cross multiply
858,831.20x = 1,288,246.80 × 297,865.70 - Step 4: Simplify right side
858,831.20x = 383,724,534,854.76 - Step 5: Solve for x
x = 383,724,534,854.76/858,831.20 - Step 6: Final answer
x = 446,798.55
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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.