Finding the Fourth Proportional to 644,495.58, 889,379.19 and 358,033.68
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Solution
The fourth proportional to 644,495.58, 889,379.19 and 358,033.68 is: 494,072.75
Step by Step Solution
- Step 1: Write the proportion equation
644,495.58 : 889,379.19 = 358,033.68 : x - Step 2: Convert to fraction form
644,495.58/889,379.19 = 358,033.68/x - Step 3: Cross multiply
644,495.58x = 889,379.19 × 358,033.68 - Step 4: Simplify right side
644,495.58x = 318,427,704,311.12 - Step 5: Solve for x
x = 318,427,704,311.12/644,495.58 - Step 6: Final answer
x = 494,072.75
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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.