Finding the Fourth Proportional to 644,691.12, 889,621.65 and 372,776.63
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Solution
The fourth proportional to 644,691.12, 889,621.65 and 372,776.63 is: 514,401.62
Step by Step Solution
- Step 1: Write the proportion equation
644,691.12 : 889,621.65 = 372,776.63 : x - Step 2: Convert to fraction form
644,691.12/889,621.65 = 372,776.63/x - Step 3: Cross multiply
644,691.12x = 889,621.65 × 372,776.63 - Step 4: Simplify right side
644,691.12x = 331,630,156,213.93 - Step 5: Solve for x
x = 331,630,156,213.93/644,691.12 - Step 6: Final answer
x = 514,401.62
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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.