Finding the Fourth Proportional to 644,455.96, 889,206.06 and 389,801.68
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Solution
The fourth proportional to 644,455.96, 889,206.06 and 389,801.68 is: 537,839.72
Step by Step Solution
- Step 1: Write the proportion equation
644,455.96 : 889,206.06 = 389,801.68 : x - Step 2: Convert to fraction form
644,455.96/889,206.06 = 389,801.68/x - Step 3: Cross multiply
644,455.96x = 889,206.06 × 389,801.68 - Step 4: Simplify right side
644,455.96x = 346,614,016,054.18 - Step 5: Solve for x
x = 346,614,016,054.18/644,455.96 - Step 6: Final answer
x = 537,839.72
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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.