Finding the Fourth Proportional to 822,818.23, 1,135,730.55 and 478,735.09
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Solution
The fourth proportional to 822,818.23, 1,135,730.55 and 478,735.09 is: 660,794.87
Step by Step Solution
- Step 1: Write the proportion equation
822,818.23 : 1,135,730.55 = 478,735.09 : x - Step 2: Convert to fraction form
822,818.23/1,135,730.55 = 478,735.09/x - Step 3: Cross multiply
822,818.23x = 1,135,730.55 × 478,735.09 - Step 4: Simplify right side
822,818.23x = 543,714,067,070.00 - Step 5: Solve for x
x = 543,714,067,070.00/822,818.23 - Step 6: Final answer
x = 660,794.87
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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.