Finding the Fourth Proportional to 603,612,275.40, 905,418,413.10 and 439,078,141.80
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Solution
The fourth proportional to 603,612,275.40, 905,418,413.10 and 439,078,141.80 is: 658,617,212.70
Step by Step Solution
- Step 1: Write the proportion equation
603,612,275.40 : 905,418,413.10 = 439,078,141.80 : x - Step 2: Convert to fraction form
603,612,275.40/905,418,413.10 = 439,078,141.80/x - Step 3: Cross multiply
603,612,275.40x = 905,418,413.10 × 439,078,141.80 - Step 4: Simplify right side
603,612,275.40x = 397,549,434,375,452,800 - Step 5: Solve for x
x = 397,549,434,375,452,800/603,612,275.40 - Step 6: Final answer
x = 658,617,212.70
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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.