Finding the Fourth Proportional to 645,269.42, 890,466.28 and 358,787.00
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Solution
The fourth proportional to 645,269.42, 890,466.28 and 358,787.00 is: 495,122.99
Step by Step Solution
- Step 1: Write the proportion equation
645,269.42 : 890,466.28 = 358,787.00 : x - Step 2: Convert to fraction form
645,269.42/890,466.28 = 358,787.00/x - Step 3: Cross multiply
645,269.42x = 890,466.28 × 358,787.00 - Step 4: Simplify right side
645,269.42x = 319,487,726,531.56 - Step 5: Solve for x
x = 319,487,726,531.56/645,269.42 - Step 6: Final answer
x = 495,122.99
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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.