Finding the Fourth Proportional to 644,758.21, 889,725.63 and 358,261.21
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Solution
The fourth proportional to 644,758.21, 889,725.63 and 358,261.21 is: 494,377.85
Step by Step Solution
- Step 1: Write the proportion equation
644,758.21 : 889,725.63 = 358,261.21 : x - Step 2: Convert to fraction form
644,758.21/889,725.63 = 358,261.21/x - Step 3: Cross multiply
644,758.21x = 889,725.63 × 358,261.21 - Step 4: Simplify right side
644,758.21x = 318,754,180,771.81 - Step 5: Solve for x
x = 318,754,180,771.81/644,758.21 - Step 6: Final answer
x = 494,377.85
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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.