Finding the Fourth Proportional to 644,774.62, 889,529.16 and 389,682.94
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Solution
The fourth proportional to 644,774.62, 889,529.16 and 389,682.94 is: 537,605.43
Step by Step Solution
- Step 1: Write the proportion equation
644,774.62 : 889,529.16 = 389,682.94 : x - Step 2: Convert to fraction form
644,774.62/889,529.16 = 389,682.94/x - Step 3: Cross multiply
644,774.62x = 889,529.16 × 389,682.94 - Step 4: Simplify right side
644,774.62x = 346,634,338,284.53 - Step 5: Solve for x
x = 346,634,338,284.53/644,774.62 - Step 6: Final answer
x = 537,605.43
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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.