Finding the Fourth Proportional to 857,145.74, 1,285,788.57 and 430,462.12
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Solution
The fourth proportional to 857,145.74, 1,285,788.57 and 430,462.12 is: 645,728.31
Step by Step Solution
- Step 1: Write the proportion equation
857,145.74 : 1,285,788.57 = 430,462.12 : x - Step 2: Convert to fraction form
857,145.74/1,285,788.57 = 430,462.12/x - Step 3: Cross multiply
857,145.74x = 1,285,788.57 × 430,462.12 - Step 4: Simplify right side
857,145.74x = 553,483,273,713.97 - Step 5: Solve for x
x = 553,483,273,713.97/857,145.74 - Step 6: Final answer
x = 645,728.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.