Finding the Fourth Proportional to 1,072,315,445.08, 1,479,915,138.42 and 649,162,257.48
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Solution
The fourth proportional to 1,072,315,445.08, 1,479,915,138.42 and 649,162,257.48 is: 895,916,454.94
Step by Step Solution
- Step 1: Write the proportion equation
1,072,315,445.08 : 1,479,915,138.42 = 649,162,257.48 : x - Step 2: Convert to fraction form
1,072,315,445.08/1,479,915,138.42 = 649,162,257.48/x - Step 3: Cross multiply
1,072,315,445.08x = 1,479,915,138.42 × 649,162,257.48 - Step 4: Simplify right side
1,072,315,445.08x = 960,705,052,135,553,920 - Step 5: Solve for x
x = 960,705,052,135,553,920/1,072,315,445.08 - Step 6: Final answer
x = 895,916,454.94
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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.