Finding the Fourth Proportional to 647,564.70, 972,221.85 and 411,368.70
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Solution
The fourth proportional to 647,564.70, 972,221.85 and 411,368.70 is: 617,608.77
Step by Step Solution
- Step 1: Write the proportion equation
647,564.70 : 972,221.85 = 411,368.70 : x - Step 2: Convert to fraction form
647,564.70/972,221.85 = 411,368.70/x - Step 3: Cross multiply
647,564.70x = 972,221.85 × 411,368.70 - Step 4: Simplify right side
647,564.70x = 399,941,638,546.10 - Step 5: Solve for x
x = 399,941,638,546.10/647,564.70 - Step 6: Final answer
x = 617,608.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.