Finding the Fourth Proportional to 645,112.23, 890,220.02 and 358,611.99
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Solution
The fourth proportional to 645,112.23, 890,220.02 and 358,611.99 is: 494,865.17
Step by Step Solution
- Step 1: Write the proportion equation
645,112.23 : 890,220.02 = 358,611.99 : x - Step 2: Convert to fraction form
645,112.23/890,220.02 = 358,611.99/x - Step 3: Cross multiply
645,112.23x = 890,220.02 × 358,611.99 - Step 4: Simplify right side
645,112.23x = 319,243,571,116.98 - Step 5: Solve for x
x = 319,243,571,116.98/645,112.23 - Step 6: Final answer
x = 494,865.17
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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.