Finding the Fourth Proportional to 478,830.20, 718,245.30 and 471,831.80
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Solution
The fourth proportional to 478,830.20, 718,245.30 and 471,831.80 is: 707,747.70
Step by Step Solution
- Step 1: Write the proportion equation
478,830.20 : 718,245.30 = 471,831.80 : x - Step 2: Convert to fraction form
478,830.20/718,245.30 = 471,831.80/x - Step 3: Cross multiply
478,830.20x = 718,245.30 × 471,831.80 - Step 4: Simplify right side
478,830.20x = 338,890,972,740.54 - Step 5: Solve for x
x = 338,890,972,740.54/478,830.20 - Step 6: Final answer
x = 707,747.70
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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.