Finding the Fourth Proportional to 518,822,626.20, 715,969,915.74 and 287,037,277.08
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Solution
The fourth proportional to 518,822,626.20, 715,969,915.74 and 287,037,277.08 is: 396,108,505.50
Step by Step Solution
- Step 1: Write the proportion equation
518,822,626.20 : 715,969,915.74 = 287,037,277.08 : x - Step 2: Convert to fraction form
518,822,626.20/715,969,915.74 = 287,037,277.08/x - Step 3: Cross multiply
518,822,626.20x = 715,969,915.74 × 287,037,277.08 - Step 4: Simplify right side
518,822,626.20x = 205,510,055,085,206,624 - Step 5: Solve for x
x = 205,510,055,085,206,624/518,822,626.20 - Step 6: Final answer
x = 396,108,505.50
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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.