Finding the Fourth Proportional to 808,642.70, 1,212,793.95 and 408,907.70
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Solution
The fourth proportional to 808,642.70, 1,212,793.95 and 408,907.70 is: 613,275.54
Step by Step Solution
- Step 1: Write the proportion equation
808,642.70 : 1,212,793.95 = 408,907.70 : x - Step 2: Convert to fraction form
808,642.70/1,212,793.95 = 408,907.70/x - Step 3: Cross multiply
808,642.70x = 1,212,793.95 × 408,907.70 - Step 4: Simplify right side
808,642.70x = 495,920,784,668.42 - Step 5: Solve for x
x = 495,920,784,668.42/808,642.70 - Step 6: Final answer
x = 613,275.54
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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.