Finding the Fourth Proportional to 620,406.17, 855,942.50 and 405,671.93
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Solution
The fourth proportional to 620,406.17, 855,942.50 and 405,671.93 is: 559,684.70
Step by Step Solution
- Step 1: Write the proportion equation
620,406.17 : 855,942.50 = 405,671.93 : x - Step 2: Convert to fraction form
620,406.17/855,942.50 = 405,671.93/x - Step 3: Cross multiply
620,406.17x = 855,942.50 × 405,671.93 - Step 4: Simplify right side
620,406.17x = 347,231,843,915.67 - Step 5: Solve for x
x = 347,231,843,915.67/620,406.17 - Step 6: Final answer
x = 559,684.70
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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.