Finding the Fourth Proportional to 2,640,639.12, 3,960,321.48 and 1,219,328.88
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Solution
The fourth proportional to 2,640,639.12, 3,960,321.48 and 1,219,328.88 is: 1,828,699.09
Step by Step Solution
- Step 1: Write the proportion equation
2,640,639.12 : 3,960,321.48 = 1,219,328.88 : x - Step 2: Convert to fraction form
2,640,639.12/3,960,321.48 = 1,219,328.88/x - Step 3: Cross multiply
2,640,639.12x = 3,960,321.48 × 1,219,328.88 - Step 4: Simplify right side
2,640,639.12x = 4,828,934,354,648.34 - Step 5: Solve for x
x = 4,828,934,354,648.34/2,640,639.12 - Step 6: Final answer
x = 1,828,699.09
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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.