Finding the Fourth Proportional to 638,361.60, 880,903.68 and 351,881.28
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Solution
The fourth proportional to 638,361.60, 880,903.68 and 351,881.28 is: 485,576.69
Step by Step Solution
- Step 1: Write the proportion equation
638,361.60 : 880,903.68 = 351,881.28 : x - Step 2: Convert to fraction form
638,361.60/880,903.68 = 351,881.28/x - Step 3: Cross multiply
638,361.60x = 880,903.68 × 351,881.28 - Step 4: Simplify right side
638,361.60x = 309,973,514,475.11 - Step 5: Solve for x
x = 309,973,514,475.11/638,361.60 - Step 6: Final answer
x = 485,576.69
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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.