Finding the Fourth Proportional to 649,938,878.22, 896,915,651.97 and 371,486,380.53
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Solution
The fourth proportional to 649,938,878.22, 896,915,651.97 and 371,486,380.53 is: 512,651,205.15
Step by Step Solution
- Step 1: Write the proportion equation
649,938,878.22 : 896,915,651.97 = 371,486,380.53 : x - Step 2: Convert to fraction form
649,938,878.22/896,915,651.97 = 371,486,380.53/x - Step 3: Cross multiply
649,938,878.22x = 896,915,651.97 × 371,486,380.53 - Step 4: Simplify right side
649,938,878.22x = 333,191,949,191,040,448 - Step 5: Solve for x
x = 333,191,949,191,040,448/649,938,878.22 - Step 6: Final answer
x = 512,651,205.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.