Finding the Fourth Proportional to 620,395.41, 855,927.63 and 405,661.17
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Solution
The fourth proportional to 620,395.41, 855,927.63 and 405,661.17 is: 559,669.85
Step by Step Solution
- Step 1: Write the proportion equation
620,395.41 : 855,927.63 = 405,661.17 : x - Step 2: Convert to fraction form
620,395.41/855,927.63 = 405,661.17/x - Step 3: Cross multiply
620,395.41x = 855,927.63 × 405,661.17 - Step 4: Simplify right side
620,395.41x = 347,216,603,821.13 - Step 5: Solve for x
x = 347,216,603,821.13/620,395.41 - Step 6: Final answer
x = 559,669.85
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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.