Finding the Fourth Proportional to 647,681.21, 893,495.02 and 421,244.09
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Solution
The fourth proportional to 647,681.21, 893,495.02 and 421,244.09 is: 581,118.44
Step by Step Solution
- Step 1: Write the proportion equation
647,681.21 : 893,495.02 = 421,244.09 : x - Step 2: Convert to fraction form
647,681.21/893,495.02 = 421,244.09/x - Step 3: Cross multiply
647,681.21x = 893,495.02 × 421,244.09 - Step 4: Simplify right side
647,681.21x = 376,379,496,619.43 - Step 5: Solve for x
x = 376,379,496,619.43/647,681.21 - Step 6: Final answer
x = 581,118.44
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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.