Finding the Fourth Proportional to 403,395.75, 556,838.43 and 317,129.67
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Solution
The fourth proportional to 403,395.75, 556,838.43 and 317,129.67 is: 437,758.67
Step by Step Solution
- Step 1: Write the proportion equation
403,395.75 : 556,838.43 = 317,129.67 : x - Step 2: Convert to fraction form
403,395.75/556,838.43 = 317,129.67/x - Step 3: Cross multiply
403,395.75x = 556,838.43 × 317,129.67 - Step 4: Simplify right side
403,395.75x = 176,589,987,549.22 - Step 5: Solve for x
x = 176,589,987,549.22/403,395.75 - Step 6: Final answer
x = 437,758.67
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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.