Finding the Fourth Proportional to 5,310,683.20, 7,971,929.70 and 3,291,207.40
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Solution
The fourth proportional to 5,310,683.20, 7,971,929.70 and 3,291,207.40 is: 4,940,470.56
Step by Step Solution
- Step 1: Write the proportion equation
5,310,683.20 : 7,971,929.70 = 3,291,207.40 : x - Step 2: Convert to fraction form
5,310,683.20/7,971,929.70 = 3,291,207.40/x - Step 3: Cross multiply
5,310,683.20x = 7,971,929.70 × 3,291,207.40 - Step 4: Simplify right side
5,310,683.20x = 26,237,274,020,919.78 - Step 5: Solve for x
x = 26,237,274,020,919.78/5,310,683.20 - Step 6: Final answer
x = 4,940,470.56
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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.