Finding the Fourth Proportional to 721,811.70, 1,083,495.15 and 406,883.70
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Solution
The fourth proportional to 721,811.70, 1,083,495.15 and 406,883.70 is: 610,763.88
Step by Step Solution
- Step 1: Write the proportion equation
721,811.70 : 1,083,495.15 = 406,883.70 : x - Step 2: Convert to fraction form
721,811.70/1,083,495.15 = 406,883.70/x - Step 3: Cross multiply
721,811.70x = 1,083,495.15 × 406,883.70 - Step 4: Simplify right side
721,811.70x = 440,856,515,564.06 - Step 5: Solve for x
x = 440,856,515,564.06/721,811.70 - Step 6: Final answer
x = 610,763.88
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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.