Finding the Fourth Proportional to 3,171,285.98, 4,376,386.11 and 1,720,980.98
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Solution
The fourth proportional to 3,171,285.98, 4,376,386.11 and 1,720,980.98 is: 2,374,959.97
Step by Step Solution
- Step 1: Write the proportion equation
3,171,285.98 : 4,376,386.11 = 1,720,980.98 : x - Step 2: Convert to fraction form
3,171,285.98/4,376,386.11 = 1,720,980.98/x - Step 3: Cross multiply
3,171,285.98x = 4,376,386.11 × 1,720,980.98 - Step 4: Simplify right side
3,171,285.98x = 7,531,677,256,446.19 - Step 5: Solve for x
x = 7,531,677,256,446.19/3,171,285.98 - Step 6: Final answer
x = 2,374,959.97
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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.