Finding the Fourth Proportional to 645,251.70, 890,444.34 and 358,754.70
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Solution
The fourth proportional to 645,251.70, 890,444.34 and 358,754.70 is: 495,079.81
Step by Step Solution
- Step 1: Write the proportion equation
645,251.70 : 890,444.34 = 358,754.70 : x - Step 2: Convert to fraction form
645,251.70/890,444.34 = 358,754.70/x - Step 3: Cross multiply
645,251.70x = 890,444.34 × 358,754.70 - Step 4: Simplify right side
645,251.70x = 319,451,092,063.40 - Step 5: Solve for x
x = 319,451,092,063.40/645,251.70 - Step 6: Final answer
x = 495,079.81
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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.