Finding the Fourth Proportional to 668,879.20, 1,003,318.80 and 313,929.10
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Solution
The fourth proportional to 668,879.20, 1,003,318.80 and 313,929.10 is: 470,893.65
Step by Step Solution
- Step 1: Write the proportion equation
668,879.20 : 1,003,318.80 = 313,929.10 : x - Step 2: Convert to fraction form
668,879.20/1,003,318.80 = 313,929.10/x - Step 3: Cross multiply
668,879.20x = 1,003,318.80 × 313,929.10 - Step 4: Simplify right side
668,879.20x = 314,970,967,897.08 - Step 5: Solve for x
x = 314,970,967,897.08/668,879.20 - Step 6: Final answer
x = 470,893.65
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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.