Finding the Fourth Proportional to 743,809.37, 1,026,478.58 and 421,508.75
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Solution
The fourth proportional to 743,809.37, 1,026,478.58 and 421,508.75 is: 581,694.34
Step by Step Solution
- Step 1: Write the proportion equation
743,809.37 : 1,026,478.58 = 421,508.75 : x - Step 2: Convert to fraction form
743,809.37/1,026,478.58 = 421,508.75/x - Step 3: Cross multiply
743,809.37x = 1,026,478.58 × 421,508.75 - Step 4: Simplify right side
743,809.37x = 432,669,695,917.64 - Step 5: Solve for x
x = 432,669,695,917.64/743,809.37 - Step 6: Final answer
x = 581,694.34
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1.5x scale
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.