Finding the Fourth Proportional to 644,553.51, 889,507.07 and 372,706.71
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Solution
The fourth proportional to 644,553.51, 889,507.07 and 372,706.71 is: 514,348.69
Step by Step Solution
- Step 1: Write the proportion equation
644,553.51 : 889,507.07 = 372,706.71 : x - Step 2: Convert to fraction form
644,553.51/889,507.07 = 372,706.71/x - Step 3: Cross multiply
644,553.51x = 889,507.07 × 372,706.71 - Step 4: Simplify right side
644,553.51x = 331,525,253,581.44 - Step 5: Solve for x
x = 331,525,253,581.44/644,553.51 - Step 6: Final answer
x = 514,348.69
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1.5x scale
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.