Finding the Fourth Proportional to 645,318.87, 890,503.44 and 358,832.79
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Solution
The fourth proportional to 645,318.87, 890,503.44 and 358,832.79 is: 495,168.90
Step by Step Solution
- Step 1: Write the proportion equation
645,318.87 : 890,503.44 = 358,832.79 : x - Step 2: Convert to fraction form
645,318.87/890,503.44 = 358,832.79/x - Step 3: Cross multiply
645,318.87x = 890,503.44 × 358,832.79 - Step 4: Simplify right side
645,318.87x = 319,541,833,879.80 - Step 5: Solve for x
x = 319,541,833,879.80/645,318.87 - Step 6: Final answer
x = 495,168.90
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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.