Finding the Fourth Proportional to 644,610.69, 889,615.71 and 415,644.62
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Solution
The fourth proportional to 644,610.69, 889,615.71 and 415,644.62 is: 573,623.72
Step by Step Solution
- Step 1: Write the proportion equation
644,610.69 : 889,615.71 = 415,644.62 : x - Step 2: Convert to fraction form
644,610.69/889,615.71 = 415,644.62/x - Step 3: Cross multiply
644,610.69x = 889,615.71 × 415,644.62 - Step 4: Simplify right side
644,610.69x = 369,763,979,280.90 - Step 5: Solve for x
x = 369,763,979,280.90/644,610.69 - Step 6: Final answer
x = 573,623.72
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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.