Finding the Fourth Proportional to 512,145.64, 706,695.78 and 285,800.68
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Solution
The fourth proportional to 512,145.64, 706,695.78 and 285,800.68 is: 394,368.55
Step by Step Solution
- Step 1: Write the proportion equation
512,145.64 : 706,695.78 = 285,800.68 : x - Step 2: Convert to fraction form
512,145.64/706,695.78 = 285,800.68/x - Step 3: Cross multiply
512,145.64x = 706,695.78 × 285,800.68 - Step 4: Simplify right side
512,145.64x = 201,974,134,477.13 - Step 5: Solve for x
x = 201,974,134,477.13/512,145.64 - Step 6: Final answer
x = 394,368.55
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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.