Finding the Fourth Proportional to 1,679,940.87, 2,318,320.71 and 915,994.41
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Solution
The fourth proportional to 1,679,940.87, 2,318,320.71 and 915,994.41 is: 1,264,073.55
Step by Step Solution
- Step 1: Write the proportion equation
1,679,940.87 : 2,318,320.71 = 915,994.41 : x - Step 2: Convert to fraction form
1,679,940.87/2,318,320.71 = 915,994.41/x - Step 3: Cross multiply
1,679,940.87x = 2,318,320.71 × 915,994.41 - Step 4: Simplify right side
1,679,940.87x = 2,123,568,810,947.23 - Step 5: Solve for x
x = 2,123,568,810,947.23/1,679,940.87 - Step 6: Final answer
x = 1,264,073.55
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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.