Finding the Fourth Proportional to 3,911,828.60, 5,397,609.70 and 2,257,372.15
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Solution
The fourth proportional to 3,911,828.60, 5,397,609.70 and 2,257,372.15 is: 3,114,761.68
Step by Step Solution
- Step 1: Write the proportion equation
3,911,828.60 : 5,397,609.70 = 2,257,372.15 : x - Step 2: Convert to fraction form
3,911,828.60/5,397,609.70 = 2,257,372.15/x - Step 3: Cross multiply
3,911,828.60x = 5,397,609.70 × 2,257,372.15 - Step 4: Simplify right side
3,911,828.60x = 12,184,413,813,349.86 - Step 5: Solve for x
x = 12,184,413,813,349.86/3,911,828.60 - Step 6: Final answer
x = 3,114,761.68
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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.