Finding the Fourth Proportional to 430,110.78, 645,079.56 and 408,771.18
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Solution
The fourth proportional to 430,110.78, 645,079.56 and 408,771.18 is: 613,074.46
Step by Step Solution
- Step 1: Write the proportion equation
430,110.78 : 645,079.56 = 408,771.18 : x - Step 2: Convert to fraction form
430,110.78/645,079.56 = 408,771.18/x - Step 3: Cross multiply
430,110.78x = 645,079.56 × 408,771.18 - Step 4: Simplify right side
430,110.78x = 263,689,932,935.08 - Step 5: Solve for x
x = 263,689,932,935.08/430,110.78 - Step 6: Final answer
x = 613,074.46
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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.