Finding the Fourth Proportional to 439,709.13, 605,969.29 and 352,395.05
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Solution
The fourth proportional to 439,709.13, 605,969.29 and 352,395.05 is: 485,640.54
Step by Step Solution
- Step 1: Write the proportion equation
439,709.13 : 605,969.29 = 352,395.05 : x - Step 2: Convert to fraction form
439,709.13/605,969.29 = 352,395.05/x - Step 3: Cross multiply
439,709.13x = 605,969.29 × 352,395.05 - Step 4: Simplify right side
439,709.13x = 213,540,580,643.93 - Step 5: Solve for x
x = 213,540,580,643.93/439,709.13 - Step 6: Final answer
x = 485,640.54
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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.