Finding the Fourth Proportional to 645,374.07, 890,511.44 and 358,886.79
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Solution
The fourth proportional to 645,374.07, 890,511.44 and 358,886.79 is: 495,205.50
Step by Step Solution
- Step 1: Write the proportion equation
645,374.07 : 890,511.44 = 358,886.79 : x - Step 2: Convert to fraction form
645,374.07/890,511.44 = 358,886.79/x - Step 3: Cross multiply
645,374.07x = 890,511.44 × 358,886.79 - Step 4: Simplify right side
645,374.07x = 319,592,790,365.44 - Step 5: Solve for x
x = 319,592,790,365.44/645,374.07 - Step 6: Final answer
x = 495,205.50
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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.