Finding the Fourth Proportional to 2,640,970.17, 3,959,968.10 and 843,431.13
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Solution
The fourth proportional to 2,640,970.17, 3,959,968.10 and 843,431.13 is: 1,264,671.75
Step by Step Solution
- Step 1: Write the proportion equation
2,640,970.17 : 3,959,968.10 = 843,431.13 : x - Step 2: Convert to fraction form
2,640,970.17/3,959,968.10 = 843,431.13/x - Step 3: Cross multiply
2,640,970.17x = 3,959,968.10 × 843,431.13 - Step 4: Simplify right side
2,640,970.17x = 3,339,960,365,129.80 - Step 5: Solve for x
x = 3,339,960,365,129.80/2,640,970.17 - Step 6: Final answer
x = 1,264,671.75
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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.