Finding the Fourth Proportional to 323,831.70, 485,747.55 and 284,465.70
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Solution
The fourth proportional to 323,831.70, 485,747.55 and 284,465.70 is: 426,698.55
Step by Step Solution
- Step 1: Write the proportion equation
323,831.70 : 485,747.55 = 284,465.70 : x - Step 2: Convert to fraction form
323,831.70/485,747.55 = 284,465.70/x - Step 3: Cross multiply
323,831.70x = 485,747.55 × 284,465.70 - Step 4: Simplify right side
323,831.70x = 138,178,516,834.04 - Step 5: Solve for x
x = 138,178,516,834.04/323,831.70 - Step 6: Final answer
x = 426,698.55
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Similar ratio
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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.