Finding the Fourth Proportional to 448,414.80, 618,787.68 and 257,415.68
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Solution
The fourth proportional to 448,414.80, 618,787.68 and 257,415.68 is: 355,219.43
Step by Step Solution
- Step 1: Write the proportion equation
448,414.80 : 618,787.68 = 257,415.68 : x - Step 2: Convert to fraction form
448,414.80/618,787.68 = 257,415.68/x - Step 3: Cross multiply
448,414.80x = 618,787.68 × 257,415.68 - Step 4: Simplify right side
448,414.80x = 159,285,651,422.82 - Step 5: Solve for x
x = 159,285,651,422.82/448,414.80 - Step 6: Final answer
x = 355,219.43
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1.5x scale
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.