Finding the Fourth Proportional to 645,465.40, 967,312.35 and 408,383.66
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Solution
The fourth proportional to 645,465.40, 967,312.35 and 408,383.66 is: 612,015.09
Step by Step Solution
- Step 1: Write the proportion equation
645,465.40 : 967,312.35 = 408,383.66 : x - Step 2: Convert to fraction form
645,465.40/967,312.35 = 408,383.66/x - Step 3: Cross multiply
645,465.40x = 967,312.35 × 408,383.66 - Step 4: Simplify right side
645,465.40x = 395,034,560,274.48 - Step 5: Solve for x
x = 395,034,560,274.48/645,465.40 - Step 6: Final answer
x = 612,015.09
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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.