Finding the Fourth Proportional to 620,109.62, 855,163.41 and 405,433.70
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Solution
The fourth proportional to 620,109.62, 855,163.41 and 405,433.70 is: 559,114.15
Step by Step Solution
- Step 1: Write the proportion equation
620,109.62 : 855,163.41 = 405,433.70 : x - Step 2: Convert to fraction form
620,109.62/855,163.41 = 405,433.70/x - Step 3: Cross multiply
620,109.62x = 855,163.41 × 405,433.70 - Step 4: Simplify right side
620,109.62x = 346,712,065,420.92 - Step 5: Solve for x
x = 346,712,065,420.92/620,109.62 - Step 6: Final answer
x = 559,114.15
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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.