Finding the Fourth Proportional to 430,379.61, 644,894.55 and 272,274.09
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Solution
The fourth proportional to 430,379.61, 644,894.55 and 272,274.09 is: 407,984.19
Step by Step Solution
- Step 1: Write the proportion equation
430,379.61 : 644,894.55 = 272,274.09 : x - Step 2: Convert to fraction form
430,379.61/644,894.55 = 272,274.09/x - Step 3: Cross multiply
430,379.61x = 644,894.55 × 272,274.09 - Step 4: Simplify right side
430,379.61x = 175,588,076,747.21 - Step 5: Solve for x
x = 175,588,076,747.21/430,379.61 - Step 6: Final answer
x = 407,984.19
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.