Finding the Fourth Proportional to 638,414.21, 955,931.84 and 385,356.44
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Solution
The fourth proportional to 638,414.21, 955,931.84 and 385,356.44 is: 577,014.86
Step by Step Solution
- Step 1: Write the proportion equation
638,414.21 : 955,931.84 = 385,356.44 : x - Step 2: Convert to fraction form
638,414.21/955,931.84 = 385,356.44/x - Step 3: Cross multiply
638,414.21x = 955,931.84 × 385,356.44 - Step 4: Simplify right side
638,414.21x = 368,374,484,038.61 - Step 5: Solve for x
x = 368,374,484,038.61/638,414.21 - Step 6: Final answer
x = 577,014.86
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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.