Finding the Fourth Proportional to 816,683.85, 1,225,274.99 and 417,604.95
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Solution
The fourth proportional to 816,683.85, 1,225,274.99 and 417,604.95 is: 626,534.86
Step by Step Solution
- Step 1: Write the proportion equation
816,683.85 : 1,225,274.99 = 417,604.95 : x - Step 2: Convert to fraction form
816,683.85/1,225,274.99 = 417,604.95/x - Step 3: Cross multiply
816,683.85x = 1,225,274.99 × 417,604.95 - Step 4: Simplify right side
816,683.85x = 511,680,898,847.18 - Step 5: Solve for x
x = 511,680,898,847.18/816,683.85 - Step 6: Final answer
x = 626,534.86
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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.