Finding the Fourth Proportional to 678,498.44, 936,344.12 and 368,414.09
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Solution
The fourth proportional to 678,498.44, 936,344.12 and 368,414.09 is: 508,420.28
Step by Step Solution
- Step 1: Write the proportion equation
678,498.44 : 936,344.12 = 368,414.09 : x - Step 2: Convert to fraction form
678,498.44/936,344.12 = 368,414.09/x - Step 3: Cross multiply
678,498.44x = 936,344.12 × 368,414.09 - Step 4: Simplify right side
678,498.44x = 344,962,367,395.44 - Step 5: Solve for x
x = 344,962,367,395.44/678,498.44 - Step 6: Final answer
x = 508,420.28
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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.