Finding the Fourth Proportional to 620,395.23, 855,927.40 and 405,660.99
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Solution
The fourth proportional to 620,395.23, 855,927.40 and 405,660.99 is: 559,669.61
Step by Step Solution
- Step 1: Write the proportion equation
620,395.23 : 855,927.40 = 405,660.99 : x - Step 2: Convert to fraction form
620,395.23/855,927.40 = 405,660.99/x - Step 3: Cross multiply
620,395.23x = 855,927.40 × 405,660.99 - Step 4: Simplify right side
620,395.23x = 347,216,356,452.13 - Step 5: Solve for x
x = 347,216,356,452.13/620,395.23 - Step 6: Final answer
x = 559,669.61
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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.